Q. 265.0( 1 Vote )

# <span lang="EN-US

Given Definite Integral can be written as:

We know that: 1+ cos2x = 2cos2x and

Let us assume, y = tanx

Differentiating w.r.t x on both sides we get,

d(y) = d(tanx)

dy = sec2xdx……(2)

Upper limit for the Definite Integral:

y = 1……(3)

The lower limit for the Definite Integral:

y = 0……(4)

Substituting (2),(3),(4) in eq(1) we get,

We know that:

We know that:

[here f’(x) is derivative of f(x)).

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