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A: (d)/(dx ) {Tan ^(-1) ((a cos x + b si...

`A: (d)/(dx ) {Tan ^(-1) ((a cos x + b sin x)/(b cos x - a sin x))=1`
`R: (d)/(dx) {Tan ^(-1) ((a cos f (x) +b sin f (x))/(b cos f (x) -a sin f (x)))}=f'(x)`

A

Both A and R are true R is correct reason of A

B

Both A and R are treu R is not correct reason of A

C

A is true but R is false

D

A is false but R is true

Text Solution

Verified by Experts

The correct Answer is:
A
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