Explain how to evaluate \(\int_{a}^{\infty} f(x) d x\).

Problem 2E

Explain how to evaluate .

Answer;

Step 1;

The given integral is f(x)dx.

Now , we have to evaluate f(x)dx.

We , know the formula dx = +C , C is constant ………..(1)

Therefore , dx = +C , since from (1).

= +C.

= ( -) +C

= ( - +C , since as x = , then f() = .

= () +C , since +p = -p = = C() .

= .