If x = a cos t, y = b sin t, then \(\rm \dfrac{d^2y}{dx^2}\) is:

1.	If x = a cos t, y = b sin t, then \(\rm \dfrac{d^2y}{dx^2}\) is:
A.	\(-\rm \dfrac{b^4}{a^2y^3}\)
B.	\(-\rm \dfrac{b^4}{a^2x^3}\)
C.	\(\rm \dfrac{b}{ay^4}\)
D.	\(\rm \dfrac{a^4}{bx^3}\)
Answer» B. \(-\rm \dfrac{b^4}{a^2x^3}\)

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If x = a cos t, y = b sin t, then \(\rm \dfrac{d^2y}{dx^2}\) is:

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