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AP Calculus BC/Unit 7: Differential Equations
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Critical Points From A Differential Equation

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A function y=f(x)y=f(x) is a solution to the differential equation dydx=xy\frac{dy}{dx} = xy. The graph of ff passes through the points (0,3)(0, 3) and (−1,2)(-1, 2). Which of the following statements must be true?

A

Neither (0,3)(0, 3) nor (−1,2)(-1, 2) is a critical point of ff.

B

(−1,2)(-1, 2) is a critical point and (0,3)(0, 3) is not a critical point of ff.

C

(0,3)(0, 3) is a critical point and (−1,2)(-1, 2) is not a critical point of ff.

D

Both (0,3)(0, 3) and (−1,2)(-1, 2) are critical points of ff.

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