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The value of K in order that f(x)=sinx-c...

The value of K in order that `f(x)=sinx-cosx-Kx+5` decreases for all positive real values of x given by

A

`Klt1`

B

`Kge1`

C

`Kgt sqrt(2)`

D

`Kltsqrt(2)`

Text Solution

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The correct Answer is:
C
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