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f(x)=(asinx+b cosx)/( csinx+dcosx) is an...

`f(x)=(asinx+b cosx)/( csinx+dcosx)` is an increasing funtion if

A

`ad-bc=0`

B

`ad-bclt0`

C

`ad-bcgt0`

D

`ab+cd=0`

Text Solution

Verified by Experts

The correct Answer is:
C
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