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  1. AP Calculus
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Parametric Equations, Polar Coordinates, and Vector–Valued Functions (BC Only)

Question 1
college-boardCalculus AB/BCAPExam Style
1 mark

Given a polar function r(θ)=sin⁡(2θ)r(\theta) = \sin(2\theta)r(θ)=sin(2θ), what is the value of drdθ\frac{dr}{d\theta}dθdr​ when θ=π4\theta = \frac{\pi}{4}θ=4π​?

Question 2
college-boardCalculus AB/BCAPExam Style
1 mark

What is the slope of the line tangent to the polar curve described by the equation r=1+cos⁡(θ)r=1+\cos(\theta)r=1+cos(θ) at the point where θ=π3\theta=\frac{\pi}{3}θ=3π​?

Question 3
college-boardCalculus AB/BCAPExam Style
1 mark

When analyzing light patterns created by stars through gravitational lensing using polar equations, if the star's intensity varies as I(θ)=I0[1+acos⁡(kθ)]I(\theta) = I_0[1 + a \cos(k\theta)]I(θ)=I0​[1+acos(kθ)], how do you determine the maximum intensity gradient given that I0I_0I0​ and aaa are constants and θ\thetaθ varies over time?

Question 4
college-boardCalculus AB/BCAPExam Style
1 mark

If the polar curve r=1+2cos⁡(θ)r = 1 + 2\cos(\theta)r=1+2cos(θ) is modified such that θ\thetaθ is replaced with 2θ2\theta2θ, what is the immediate impact on the number of petals represented by the graph?

Question 5
college-boardCalculus AB/BCAPExam Style
1 mark

Given a polar curve defined by r(θ)=sin⁡(2θ)r(\theta) = \sin(2\theta)r(θ)=sin(2θ), what is the slope of the tangent line when θ=π4\theta = \frac{\pi}{4}θ=4π​?

Question 6
college-boardCalculus AB/BCAPExam Style
1 mark

Given the differential equation dθdϑ=f(ϑ)\frac{d\theta}{d\vartheta} = f(\vartheta)dϑdθ​=f(ϑ) and f(ϑ)=tan⁡(ϑ)csc⁡(ϑ)f(\vartheta) = \tan(\vartheta)\csc(\vartheta)f(ϑ)=tan(ϑ)csc(ϑ), what is the solution that passes through the point where ϑ=π2\vartheta = \frac{\pi}{2}ϑ=2π​ and θ=?\theta = ?θ=?

Question 7
college-boardCalculus AB/BCAPExam Style
1 mark

What result would you expect after applying the chain rule in differentiation, especially taking into consideration the fact that functions are expressed in terms of another variable other than ttt or xxx?

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Question 8
college-boardCalculus AB/BCAPExam Style
1 mark

What is the purpose of the chain rule in polar functions?

Question 9
college-boardCalculus AB/BCAPExam Style
1 mark

What condition must be satisfied for the Alternating Series Test to confirm that an alternating series converges?

Question 10
college-boardCalculus AB/BCAPExam Style
1 mark

When solving for the reciprocal derivative of a function in polar form given that rn(θ)=@(θ)@(n)r^n(\theta)=@(\theta)^{@(n)}rn(θ)=@(θ)@(n), which method would be appropriate to use for ensuring that the differential dydx\frac{dy}{dx}dxdy​ is solved correctly?