If \[f(x)=\sin x-\cos x,\] the function decreasing in \[0\le x\le 2\pi \] is [UPSEAT 2001]

If \[f(x)=\sin x-\cos x,\] the function decreasing in \[0\le x\le 2\pi

1.	If \[f(x)=\sin x-\cos x,\] the function decreasing in \[0\le x\le 2\pi \] is [UPSEAT 2001]
A.	\[[5\pi /6,\,3\pi /4]\]
B.	\[[\pi /4,\,\pi /2]\]
C.	\[[3\pi /2,\,5\pi /2]\]
D.	None of these
Answer» E.

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If \[f(x)=\sin x-\cos x,\] the function decreasing in \[0\le x\le 2\pi \] is [UPSEAT 2001]

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