Find ( frac{dy}{dx} ), if x=3a2 cos2 and y=4a sin2 .

1.	Find ( frac{dy}{dx} ), if x=3a2 cos2 and y=4a sin2 .
A.	( frac{3}{4a} )
B.	( frac{4}{3a} )
C.	( frac{4}{3a} )
D.	( frac{3}{4a} )
Answer» C. ( frac{4}{3a} )

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