Let f be a differentiable function satis...

Let f be a differentiable function satisfying `f '(x) =2 f(x) +10 AA x in R and f (0) =0,` then the number of real roots of the equation `f (x)+ 5 sec ^(2) x=0` ln `(0, 2pi)` is:

A

0

B

1

C

2

D

3

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The correct Answer is:

A

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