cos x

square root x

the derivative of this, i just need a worked example, i just keep getting the wrong answer

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- Feb 27th 2009, 03:13 PMI Drink and DeriveTrig Differentiation
__cos x__

square root x

the derivative of this, i just need a worked example, i just keep getting the wrong answer - Feb 27th 2009, 03:21 PMnmatthies1
using the quotient rule

- Feb 27th 2009, 03:24 PMI Drink and Derive
yes i got to there but the answer takes it further, like it has a denominator of 2x ROOT x in the answers, anyway to go furhter than that?

thanks anyway - Feb 27th 2009, 03:28 PMlllll
which should simplify the calculation

so once we differentiate we get:

simplifying we have:

- Feb 27th 2009, 03:29 PMe^(i*pi)
- Feb 27th 2009, 03:29 PMmr fantastic
- Feb 27th 2009, 03:31 PMnmatthies1