If \[x=\sin t\cos 2t\] and \[y=\cos t\sin 2t\], then at \[t=\frac{\pi }{4},\] the value of \[\frac{dy}{dx}\] is equal to [Pb. CET 2000]

If \[x=\sin t\cos 2t\] and \[y=\cos t\sin 2t\], then at \[t=\frac{\pi

1.	If \[x=\sin t\cos 2t\] and \[y=\cos t\sin 2t\], then at \[t=\frac{\pi }{4},\] the value of \[\frac{dy}{dx}\] is equal to [Pb. CET 2000]
A.	?2
B.	2
C.	\[\frac{1}{2}\]
D.	\[-\frac{1}{2}\]
Answer» D. \[-\frac{1}{2}\]

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If \[x=\sin t\cos 2t\] and \[y=\cos t\sin 2t\], then at \[t=\frac{\pi }{4},\] the value of \[\frac{dy}{dx}\] is equal to [Pb. CET 2000]

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