Verify Rolle's theorem for each of the f...

Verify Rolle's theorem for each of the following functions :
`f(x) = e^(-x) (sin x - cos x) " in " [(pi)/(4), (5pi)/(4)]`

A

(a) `pi/2`

B

(b) `pi/3`

C

(c) `(2pi)/3`

D

(d) None of these

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The correct Answer is:

A

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