$\"\"$

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(a)

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The integral is $\"\"$ .

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$\"\"$

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Because $\"\"$ diverges as does $\"\"$ .

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Therefore, $\"\"$ diverges.

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$\"\"$

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(b).

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Find the value of $\"\"$ .

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$\"\"$

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Therefore $\"\"$ .

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$\"\"$

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(c).

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The defination of $\"\"$ is not $\"\"$ .

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$\"\"$

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(a).

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$\"\"$ diverges.

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(b).

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$\"\"$ .

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(c).

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The defination of $\"\"$ is not $\"\"$ .