The integrals ofandmay both be evaluated by substitution. Specifically, substitute

Ifthen

and

The integral becomes

The original substitution wassoand

Ifthen

andas before.

The integral becomes

The original substitution wasso that

Hence

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The integrals ofandmay both be evaluated by substitution. Specifically, substitute

Ifthen

and

The integral becomes

The original substitution wassoand

Ifthen

andas before.

The integral becomes

The original substitution wasso that

Hence