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In which of the following cases the give...

In which of the following cases the given equations has atleast one root in the indicated interval ?

A

`x - cos x =0` in `(0,pi//2)`

B

`x+ sinx = 1` in `(0,pi//6)`

C

`f(x)-g(x)=0` in `(a,b)` where f and g are continous

D

[a,b] and `f(a) gt g(a)` and `f(b) lt g(b)`.

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The correct Answer is:
A, B, C, D
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