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 Post subject: monotonocity problemPosted: Wed, 16 May 2012 18:04:16 UTC
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discuss the monotonocity of on
i am getting the interval but how to check on each and every interval.

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 Post subject: Re: monotonocity problemPosted: Wed, 16 May 2012 22:53:41 UTC
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mun wrote:
discuss the monotonocity of on
i am getting the interval but how to check on each and every interval.

What is it you want to check? The interval ends are at odd multiples of π/2, i.e. 1/x is an odd multiple of 1/2.

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 Post subject: Re: monotonocity problemPosted: Wed, 16 May 2012 23:15:22 UTC
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mun wrote:
discuss the monotonocity of on
i am getting the interval but how to check on each and every interval.

The derivative is , for it to change sign you need that has the same sign on an entire interval, so use what you know about zeros of the cosine function to finish the problem.

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