Find all points of intersection of the given curves. r = cos 3θ, r = 3θ
> Root hairs ______. a. conduct water from cortex to aboveground shoots b. increase the root’s surface area for absorption c. anchor the plant in soil
> A dendritic cell engulfs a bacterium, then presents bacterial bits on its surface along with a(n) ________. a. MHC marker b. antibody c. T cell receptor d. antigen
> Antibodies are ______. a. antigen receptors b. made only by B cells c. proteins d. all of the above
> ____ trigger(s) immune responses. a. Cytokines b. Lysozyme c. Antibodies d. Antigens e. Histamines f. MHC markers
> A flu shot is a vaccine for several strains of influenza virus. This year, you get the shot and “the flu.” What happened? (There are at least three explanations.)
> Which artery carries oxygen-poor blood?
> Which of the following has the thickest wall? a. left atrium b. left ventricle c. right atrium d. right ventricle
> Blood pressure is highest in the and lowest in the _________. a. arteries; veins b. arterioles; venules c. veins; arteries d. capillaries; arterioles
> Match the terms with the most suitable description. a. broadleaf forest near equator b.partly enclosed by land; where tundra chaparral desert fresh water and seawater mix c. African grassland with trees d.low-growing plants at high latitudes or eleva
> Blood flows directly from the left atrium to ___________. a. the aorta b. the left ventricle c. the right atrium d. the pulmonary arteries
> The plasma protein albumin is made by ______. a. white blood cells b. red blood cells c. the heart d. the liver
> 1. In ________ blood flows through two completely separate circuits. a. birds b. mammals c. fish d. both a and b 2. The _______ circuit carries blood to and from lungs. a. systemic b. pulmonary 3. Platelets function in ______. a. oxygen transport b. bl
> In a(n) _______, the primary root is typically the largest. a. lateral meristem b. adventitious root system c. fibrous root system d. taproot system
> Is an onion a root or a stem?
> Typically, vascular tissue is organized as in stems and as in roots. a. multiple vascular bundles; one vascular cylinder b. one vascular bundle; multiple vascular cylinders c. one vascular cylinder; multiple vascular bundles d. multiple vascular cylinder
> A vascular bundle in a leaf is called ______. a. a vascular cylinder b. mesophyll c. a vein d. vascular cambium
> Epidermis and periderm are ______ tissues. a. ground b. vascular c. dermal
> All of the vascular bundles inside a typical ______ are arranged in a ring. a. monocot stem b. eudicot stem c. monocot root d. eudicot root
> Which of these traits are retained by an adult lancelet?
> Individuals help sustain biodiversity by ___________. a. reducing consumption b. reusing materials c. recycling materials d. all of the above
> True or false? Most species that evolved have already become extinct.
> Find the points on the given curve where the tangent line is horizontal or vertical. r=1- sine
> Find the points on the given curve where the tangent line is horizontal or vertical.
> Find the points on the given curve where the tangent line is horizontal or vertical. r= e°
> Find the points on the given curve where the tangent line is horizontal or vertical. r= 3 cos e 3 cos
> Find the slope of the tangent line to the given polar curve at the point specified by the value of θ. r= cos(0/3), e= T
> Find the slope of the tangent line to the given polar curve at the point specified by the value of θ. r= cos 20, e = T/4
> Find the slope of the tangent line to the given polar curve at the point specified by the value of θ. r%3D 2 — sin 6, ө— п/3
> Find the slope of the tangent line to the given polar curve at the point specified by the value of θ. r= 1/6, 0 = T
> Evaluate ∑ni-1 3/2i-1.
> Prove the formula for the sum of a finite geometric series with first term and common ratio r ≠1: a(r* – 1) E ari- = a + ar + ar? + · .. + ar"-1 %3D i-1 r- 1
> A machinist is required to manufacture a circular metal disk with area 1000cm2. (a). What radius produces such a disk? (b). If the machinist is allowed an error tolerance of ±5 cm2 in the area of the disk, how close to the ideal radius in part (a) must t
> Show that the curve r = sin θ tan θ (called a cissoid of Diocles) has the line x = 1 as a vertical asymptote. Show also that the curve lies entirely within the vertical strip 0 < x < 1. Use these facts to help sketch the cissoid.
> Show that the polar curve r = 4 + 2 sec θ (called a conchoid) has the line x = 2 as a vertical asymptote by showing that limr→±∞ x = 2. Use this fact to help sketch the conchoid.
> The figure shows a graph of r as a function of θ in Cartesian coordinates. Use it to sketch the corresponding polar curve. TA 2- -2-
> The figure shows a graph of r as a function of θ in Cartesian coordinates. Use it to sketch the corresponding polar curve. TA 2+ 1-
> Sketch the curve with the given polar equation. r = 1 + 2 cos (θ/2)
> Sketch the curve with the given polar equation. r = 1 + 2 cos 2θ
> Use a calculator to find the length of the curve correct to four decimal places. r = 4 sin 30
> Use a calculator to find the length of the curve correct to four decimal places. r= 3 sin 20
> Find the exact length of the polar curve. r = θ, o < θ < 2π
> Find the exact length of the polar curve. r = θ2, o < θ < 2π
> Sketch the curve and find the area that it encloses. r = 2 – sin θ
> Find the exact length of the polar curve. r = e2θ, o < θ < 2π
> Find the exact length of the polar curve. r = 3 sin θ, o < θ < π/3
> Use a graph to estimate the values of θ for which the curves r = 3 + sin 5θ and r = 6 sin θ intersect. Then estimate the area that lies inside both curves.
> Sketch the curve with the given polar equation. r = 2 cos 4θ
> Find all points of intersection of the given curves. r2 = sin 2θ, r2 = cos 2θ
> Find all points of intersection of the given curves. r = sin θ, r = 2θ
> Find all points of intersection of the given curves. r = 2 sin 2θ, r = 1
> Sketch the curve with the given polar equation. r = 1 – 3 cos θ
> Sketch the curve with the given polar equation. r = 2 (1- sin θ), θ > 0
> Evaluate the integral. f x – 9/(x + 5) (x – 2), dx
> Sketch the curve with the given polar equation. r = -3 cos θ
> Find the area of the region that lies inside both curves. r= sin 20, r = cos 20
> Find the area of the region that lies inside both curves. r = 1+ cos 0, r=1- cos e %3D
> Find the area of the region that lies inside both curves. r= V3 cos 0, r= sin e
> If u (x) = f (x) + ig (x) is a complex-valued function of a real variable x and the real and imaginary parts f (x) and g (x) are differentiable functions of x, then the derivative of u is defined to be u'(x) = f'(x) + ig'(x). Use this together with Equat
> Find the area of the region that lies inside the first curve and outside the second curve. r= 3 sin 0, r= 2 - sin e
> Use Euler’s formula to prove the following formulas for cos x and sin x: eir + e-ir cos x eir – e-ir sin x 2 2i
> Use De Moivre’s Theorem with n = 3 to express cos 3θ and sin 3θ in terms of cos θ and sin θ.
> Write the number in the form a + bi. e π+i
> Write the number in the form a + bi. e 2 + iπ
> Write the number in the form a + bi. e -iπ
> Write the number in the form a + bi. e iπ/3
> Write the number in the form a + bi. e 2πi
> Write the number in the form a + bi. e iπ/2
> Find the indicated roots. Sketch the roots in the complex plane. The cube roots of 1 + i
> Find the indicated roots. Sketch the roots in the complex plane. The cube roots of i
> Find the area of the region that lies inside the first curve and outside the second curve. r= 3 cos 0, r=1+ cos e
> Find the indicated roots. Sketch the roots in the complex plane. The fifth roots of 32
> Find the indicated roots. Sketch the roots in the complex plane. The eighth roots of 1
> Find the indicated power using De Moivre’s Theorem. (1 – i)8
> Find the indicated power using De Moivre’s Theorem. (2√3 + 2 i)5
> Find the indicated power using De Moivre’s Theorem. (1 – √3 i)5
> Find the indicated power using De Moivre’s Theorem. (1 + i)20
> Find polar forms for zw, z/w, and 1/z by first putting z and w into polar form. = 4(/3 + i), w = -3 – 3i
> Find polar forms for zw, z/w, and 1/z by first putting z and w into polar form. z = 2/3 – 2i, w = -1 +i
> Find polar forms for zw, z/w, and 1/z by first putting z and w into polar form. z = 4/3 – 4i, w = 8i %3D %3D
> Find polar forms for zw, z/w, and 1/z by first putting z and w into polar form. z = 3 + i, w = 1 + v3i
> Find the area of the region that lies inside the first curve and outside the second curve. r=1- sin 6, r= 1
> Write the number in polar form with argument between 0 and 2π. 8i
> Write the number in polar form with argument between 0 and 2π. 3 + 4i
> Write the number in polar form with argument between 0 and 2π. 1 – √3 i
> Write the number in polar form with argument between 0 and 2π. -3 + 3i
> Find all solutions of the equation. z2 + 1/2 z + 1/4 = 0
> Find all solutions of the equation. z2 + x + 2 = 0
> Find all solutions of the equation. 2x2 – 2x + 1 = 0
> Find all solutions of the equation. x2 + 2x + 5 = 0
> Find all solutions of the equation. x4 = 1
> Find all solutions of the equation. 4x2 + 9 = 0
> Find the area of the region that lies inside the first curve and outside the second curve. r= 2 cos e, r = 1
> Prove the following properties of complex numbers. (a) z + w = 7 + w (b) zw m = mz (q) (c) z* = 7", where n is a positive integer [Hint: Write z = a + bi, w = c + di.]
> Find the complex conjugate and the modulus of the number. -4i
> Find the complex conjugate and the modulus of the number. -1 + 2/2 i
> Find the complex conjugate and the modulus of the number. 12 – 15i
> Evaluate the expression and write your answer in the form a + bi. V-3V-12
> Evaluate the expression and write your answer in the form a + bi. V-25
> Evaluate the expression and write your answer in the form a + bi. i100
> Evaluate the expression and write your answer in the form a + bi. i3
