Question: Find the area of the region bounded
Find the area of the region bounded by the given curves.
Transcribed Image Text:
у 3 Vx, у— х?, х—2 y
> The graphs of two functions are shown with the areas of the regions between the curves indicated. (a) What is the total area between the curves for 0 < x< 5? (b) What is the value of f [f(x) – g(x)]dx? y 27 12 4 3. 2.
> Find the average value of the function on the given interval. S(к) — х?/(х3 + 3)?, [-1, 1]
> Find the average value of the function on the given interval. д(х) — 3 сos x, [-п/2, п/2]
> Find the average value of the function on the given interval. f(x) = /x, [0, 4]
> Find the average value of the function on the given interval. f(x) — Зх? + 8x, [-1,2] –1, 2]
> The table shows values of a force function f(x) where x is measured in meters and f(x) in newtons. Use the Midpoint Rule to estimate the work done by the force in moving an object from x = 4 to x = 20. 68 10 1 4 12| 14 16 18 f(x) 5.8 7.0 | 8.8 | 9.6
> The figure shows a horizontal line y = c intersecting the curve y = 8x - 27x3. Find the number c such that the areas of the shaded regions are equal.
> There is a line through the origin that divides the region bounded by the parabola y = x - x2 and the x-axis into two regions with equal area. What is the slope of that line?
> (a) Find a positive continuous function f such that the area under the graph off from 0 to t is A(t) = t3 for all t. 0. (b) A solid is generated by rotating about the x-axis the region under the curve y – f(x), where f is a positive function and x > 0.
> If the tangent at a point P on the curve y = x3 intersects the curve again at Q, let A be the area of the region bounded by the curve and the line segment PQ. Let B be the area of the region defined in the same way starting with Q instead of P. What is t
> Suppose we are planning to make a taco from a round tortilla with diameter 8 inches by bending the tortilla so that it is shaped as if it is partially wrapped around a circular cylinder. We will fill the tortilla to the edge (but no more) with meat, chee
> Sketch the region enclosed by the given curves and find its area. у — x, у— 2x, х+у—3, х>0
> Suppose the graph of a cubic polynomial intersects the parabola y = x2 when x = 0, x = a, and x = b, where 0 < a < b. If the two regions between the curves have the same area, how is b related to a?
> A cylindrical container of radius r and height L is partially filled with a liquid whose volume is V. If the container is rotated about its axis of symmetry with constant angular speed
> A clepsydra, or water clock, is a glass container with a small hole in the bottom through which water can flow. The “clock” is calibrated for measuring time by placing markings on the container corresponding to water l
> A paper drinking cup filled with water has the shape of a cone with height h and semi- vertical angle
> The figure shows a curve C with the property that, for every point P on the middle curve y = -x2, the areas A and B are equal. Find an equation for C. yA y= 2x? C y=x² A
> A sphere of radius 1 overlaps a smaller sphere of radius r in such a way that their intersection is a circle of radius r. (In other words, they intersect in a great circle of the small sphere.) Find r so that the volume inside the small sphere and outsid
> Water in an open bowl evaporates at a rate proportional to the area of the surface of the water. (This means that the rate of decrease of the volume is proportional to the area of the surface.) Show that the depth of the water decreases at a constant rat
> Archimedes’ Principle states that the buoyant force on an object partially or fully submerged in a fluid is equal to the weight of the fluid that the object displaces. Thus, for an object of density 0 floating partly submerged in a flui
> (a) Show that the volume of a segment of height h of a sphere of radius r is (b) Show that if a sphere of radius 1 is sliced by a plane at a distance x from the center in such a way that the volume of one segment is twice the volume of the other, then x
> A cylindrical glass of radius r and height L is filled with water and then tilted until the water remaining in the glass exactly covers its base. (a) Determine a way to “slice” the water into parallel rectangular cros
> Sketch the region enclosed by the given curves and find its area. у — 1/х, у— х, у—\x, х>0
> Find the area of the region bounded by the given curves. y = x', y = 4x – x²
> Let R1 be the region bounded by y = x2 , y = 0, and (a) Is there a value of b such that /1 and /2 have the same area? (b) Is there a value of b such that /1 sweeps out the same volume when rotated about the x-axis and the y-axis? (c) Is there a value of
> (a) Find the average value of the function f(x) – 1/sx on the interval [1, 4]. (b) Find the value c guaranteed by the Mean Value Theorem for Integrals such that fave = f(c). (c) Sketch the graph of f on [1, 4] and a rectangle whose area is the same as th
> A steel tank has the shape of a circular cylinder oriented vertically with diameter 4 m and height 5 m. The tank is currently filled to a level of 3 m with cooking oil that has a density of 920 kg/m3. Compute the work required to pump the oil out through
> A tank full of water has the shape of a paraboloid of revolution as shown in the figure; that is, its shape is obtained by rotating a parabola about a vertical axis. (a) If its height is 4 ft and the radius at the top is 4 ft, find the work required to p
> A 1600-lb elevator is suspended by a 200-ft cable that weighs 10 lb/ft. How much work is required to raise the elevator from the basement to the third floor, a distance of 30 ft?
> (a) The base of a solid is a square with vertices located at (1, 0), (0, 1), (21, 0), and (0, 21). Each cross-section perpendicular to the x-axis is a semicircle. Find the volume of the solid. (b) Show that by cutting the solid of part (a), we can rearra
> The height of a monument is 20 m. A horizontal cross section at a distance x meters from the top is an equilateral triangle with / meters. Find the volume of the monument.
> The base of a solid is the region bounded by the parabolas y = x2 and y = 2 - x2. Find the volume of the solid if the cross-sections perpendicular to the x-axis are squares with one side lying along the base.
> The base of a solid is a circular disk with radius 3. Find the volume of the solid if parallel cross-sections perpendicular to the base are isosceles right triangles with hypotenuse lying along the base.
> Sketch the region enclosed by the given curves and find its area. у 3 sinhx, у —е , х—0, х—2
> Each integral represents the volume of a solid. Describe the solid. 2т (6 — у)(4у — у?) dy
> Each integral represents the volume of a solid. Describe the solid. S T (2 – sin x)² dx
> Let / be the region bounded by the curves y = 1 - x2 and y = x6 - x + 1. Estimate the following quantities. (a) The x-coordinates of the points of intersection of the curves (b) The area of / (c) The volume generated when/is rotated about the x-axis (d)
> Let / be the region bounded by the curves y = tan(x2), x = 1, and y = 0. Use the Midpoint Rule with n = 4 to estimate the following quantities. (a) The area of/ b) The volume obtained by rotating / about the x-axis
> Let / be the region in the first quadrant bounded by the curves y = x3 and y = 2x 2 x2. Calculate the following quantities. (a) The area of / (b) The volume obtained by rotating / about the x-axis (c) The volume obtained by rotating / about the y-axis
> Find the volumes of the solids obtained by rotating the region bounded by the curves y = x and y = x2 about the following lines. (a) The x-axis (b) The y-axis (c) y = 2
> Set up, but do not evaluate, an integral for the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. - y = Vx, y = x²; about y = 2
> Set up, but do not evaluate, an integral for the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. у — соs х, [|x| < п/2, у — %: about.х — п, п/2
> Set up, but do not evaluate, an integral for the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. у %3 tan x, у — х, х — п/3; about the y-axis TT
> Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. x? – y? = a², x = a + h (where a>0, h > 0); about the y-axis
> Sketch the region enclosed by the given curves and find its area. y = x*, y = 2 - |x| у — х",
> Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y = x? + 1, y = 9 – x²; about y = -1
> Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. x = 0, x = 9 – y²; about x = -1
> Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. x = 1 + y², y - x – 3; about the y-axis
> Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. _y = 2x, y = x²; about the x-axis %3D
> Find the area of the region bounded by the given curves. у у — х? — 2х sin(тx/2), 2.x y
> Find the area of the region bounded by the given curves. x + y = 0, x = y² + 3y
> Find the area of the region bounded by the given curves. у —1- 2x?, у — \x| y y = |x|
> Find the area of the region bounded by the given curves. у — x, у— —Vx, у—х— 2
> (a) An outfielder fields a baseball 280 ft away from home plate and throws it directly to the catcher with an initial velocity of 100 ft/s. Assume that the velocity v(t) of the ball after t seconds satisfies the differential equation dv/dt − 2 1 10v beca
> Sketch the region enclosed by the given curves and find its area. y = cos x, y=1 – cos x, 0<x<T
> In this problem we calculate the work required for a pitcher to throw a 90-miyh fastball by first considering kinetic energy. Suppose an object of mass m, moving in a straight line, is acted on by a force F = F(s) that depends on its position s. Accordin
> It may surprise you to learn that the collision of baseball and bat lasts only about a thousandth of a second. Here we calculate the average force on the bat during this collision by first computing the change in the ball’s momentum. Th
> Find the average value of the function on the given interval. h(u) — (In u)/и, [1,5]
> Find the average value of the function on the given interval. h(x) cos*x sin x, [0, 7]
> If fave [a, b] denotes the average value of f on the interval [a, b] and a b — с Save[c, b] b — а c - a fave[a, b] fave [a, c] + b — а
> Prove the Mean Value Theorem for Integrals by applying the Mean Value Theorem for derivatives (see Section 4.2) to the function /
> Use the diagram to show that if f is concave upward on [a, b], then a + b fave >f 2 y a +b b a 2.
> Use the result of Exercise 5.5.83 to compute the average volume of inhaled air in the lungs in one respiratory cycle.
> If a freely falling body starts from rest, then its displacement is given by / 2tt2. Let the velocity after a time T be vT. Show that if we compute the average of the velocities with respect to t we g / 2vT, but if we compute the average of the velocit
> In Example 3.8.1 we modeled the world population in the second half of the 20th century by the equation P(t) = 2560e0.017185t. Use this equation to estimate the average world population during this time period.
> Sketch the region enclosed by the given curves and find its area. y = 2x, y=x², 0<x<6
> (a) A cup of coffee has temperature 95°C and takes 30 minutes to cool to 61°C in a room with temperature 20°C. Use Newton’s Law of Cooling (Section 3.8) to show that the temperature of the coffee after t
> The velocity v of blood that flows in a blood vessel with radius R and length l at a distance r from the central axis is where P is the pressure difference between the ends of the vessel and is the viscosity of the blood (see Example 3.7.7). Find the av
> In a certain city the temperature (in °F) t hours after 9 am was modeled by the function Find the average temperature during the period from 9 am to 9 pm. T(1) = 50 + 14 sin 12
> The velocity graph of an accelerating car is shown. (a) Use the Midpoint Rule to estimate the average velocity of the car during the first 12 seconds. (b) At what time was the instantaneous velocity equal to the average velocity? (km/h) 60 40 20 4
> Find the average value off on [0, 8]. 1 4 6. 2.
> Find the numbers b such that the average value of f(x) = 2 + 6x = 3x2 on the interval [0, b] is equal to 3.
> If f is continuous and / show that f takes on the value 4 at least once on the interval [1, 3].
> (a) Find the average value of f on the given interval. (b) Find c such that fave – f(c) (c) Sketch the graph of f and a rectangle whose area is the same as the area under the graph of f. f(x) = 2xe *', [0, 2]
> (a) Find the average value of f on the given interval. (b) Find c such that fave – f(c) (c) Sketch the graph of f and a rectangle whose area is the same as the area under the graph of f. f(x) — [0, п] 2 sin x – sin 2x,
> (a) Find the average value off on the given interval. (b) Find c such that fave – f(c) (c) Sketch the graph of f and a rectangle whose area is the same as the area under the graph of f. f(x) = 1/x, [1, 3]
> Sketch the region enclosed by the given curves and find its area. .3 y = x', y=x
> (a) Find the average value of f on the given interval. (b) Find c such that fave – f(c) (c) Sketch the graph of f and a rectangle whose area is the same as the area under the graph of f. S(x) f() — (х — 3)?, [2, 5]
> Shown is the graph of a force function (in newtons) that increases to its maximum value and then remains constant. How much work is done by the force in moving an object a distance of 8 m? FA(N) 30 20 10 1 2 3 4 5 6 7 8 x (m)
> When a particle is located a distance x meters from the origin, a force of / newtons acts on it. How much work is done in moving the particle from x = 1 to x = 2? Interpret your answer by considering the work done from x = 1 to x = 1.5 and from x = 1.5 t
> The Great Pyramid of King Khufu was built of limestone in Egypt over a 20-year time period from 2580 bc to 2560 bc. Its base is a square with side length 756 ft and its height when built was 481 ft. (It was the tallest manmade structure in the world for
> (a) Newton’s Law of Gravitation states that two bodies with masses m1 and m2 attract each other with a force where r is the distance between the bodies and G is the gravitational constant. If one of the bodies is fixed, find the work ne
> Suppose that when launching an 800-kg roller coaster car an electromagnetic propulsion system exerts a force of 5.7x2 + 1.5x newtons on the car at a distance x meters along the track. Use Exercise 31(a) to find the speed of the car when it has traveled 6
> The kinetic energy KE of an object of mass m moving with velocity v is defined as / 2 mv2. If a force f(x) acts on the object, moving it along the x-axis from x1 to x2, the Work-Energy Theorem states that the net work done is equal to the change in kine
> In a steam engine the pressure P and volume V of steam satisfy the equation PV1.4 = k, where k is a constant. (This is true for adiabatic expansion, that is, expansion in which there is no heat transfer between the cylinder and its surroundings.) Use Exe
> When gas expands in a cylinder with radius r, the pressure at any given time is a function of the volume: P − P(V). The force exerted by the gas on the piston (see the figure) is the product of the pressure and the area: F −
> Solve Exercise 24 if the tank is half full of oil that has a density of 900 kg/m3.
> Sketch the region enclosed by the given curves and find its area. y = tan x, y = 2 sin x, -7/3 < x< #/3
> Find the area of the shaded region. yA x= y? – 2 y=1 (x=e' ソニー1
> Suppose that for the tank in Exercise 23 the pump breaks down after 4.7 × 105 J of work has been done. What is the depth of the water remaining in the tank? Data from Exercise 23: A tank is full of water. Find the work required to pump the
> A tank is full of water. Find the work required to pump the water out of the spout. In Exercises 25 and 26 use the fact that water weighs 62.5 lb/ft3. 6 ft 26. 12 ft - f 8 ft 6 ft - 3 ft 10 ft frustum of a cone
> A tank is full of water. Find the work required to pump the water out of the spout. In Exercises 25 and 26 use the fact that water weighs 62.5 lb/ft3. - 3 m - 24. |1 m 2 m 3 m 3 m 8 m
> Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. A spherical water tank, 24 ft in diameter, sits atop a 60 ft tower. The tank is filled by a hose attached to the bottom of the sphere. If a
> Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. An aquarium 2 m long, 1 m wide, and 1 m deep is full of water. Find the work needed to pump half of the water out of the aquarium. (Use the
> Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. A circular swimming pool has a diameter of 24 ft, the sides are 5 ft high, and the depth of the water is 4 ft. How much work is required to
> Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. A 10-ft chain weighs 25 lb and hangs from a ceiling. Find the work done in lifting the lower end of the chain to the ceiling so that it’s le
> Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. A bucket that weighs 4 lb and a rope of negligible weight are used to draw water from a well that is 80 ft deep. The bucket is filled with 4
> Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. A leaky 10-kg bucket is lifted from the ground to a height of 12 m at a constant speed with a rope that weighs 0.8 kg/m. Initially the bucke
> Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. A chain lying on the ground is 10 m long and its mass is 80 kg. How much work is required to raise one end of the chain to a height of 6 m?
> Sketch the region enclosed by the given curves and find its area. х — у, у— V2 — х, у— 0 2- х, у x =
