please any body help me

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- July 26th 2006, 09:04 AMm777please help me to solve that questions
please any body help me

- July 26th 2006, 12:04 PMgalactus
For #3, I'd try the ratio test. It works well with factorials and powers.

For #1, can you find the derivative of ?.

Try logarithmic differentiation.

I'll use x instead of theta for the sake of typing.

Differentiate:

Remember,

- July 26th 2006, 12:23 PMThePerfectHacker
You can also use a useful rule.

where and is some function of "x" then,

When used with your problem gives the same result as galactus said.