Answer (Detailed Solution Below)

Option 2 : 2
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Detailed Solution

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Concept:

Odd and even function:

If a function f(x) such that f(-x) = f(x) then f(x) is an even function and if f(-x) = -f(x) then f(x) is an odd function.

Integration of odd and even function:

The following two cases hold for a differentiable function f(x).

If f(x) is an even function then .

If f(x) is an odd function then .

Calculation:

Let , put -x instead of x then we get .

Therefore, f(-x) = f(x) implies that f(x) is an even function.

Thus, the integral is given by,

Hence, the value of the given integral is 2.

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