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If sin h^(3)x-cos h^(3)x=(ke^(x)-e^(-kx)...

If `sin h^(3)x-cos h^(3)x=(ke^(x)-e^(-kx))/(1-k)` then k=

A

`-1`

B

0

C

`-3`

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
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