AP Calculus AB / Differential Equations / Question No. 40

40. If \( f'(x) = -y \) and \( f(1) = 1 \), then \( f(x) \) is:

\( \frac{1}{2} e^{-2x+2} \)

\( e^{-x-1} \)

\( e^{1-x} \)

\( e^{-x} - e^x \)

Answer is: option3

\( e^{1-x} \)

Solution:

\( e^{1-x} \)

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Home Practice Questions AP Calculus AB Differential Equations Question No. 40