[SPLIT, MOVED] finding derivative of complicated expression

Limits, differentiation, related rates, integration, trig integrals, etc.
mrtn
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[SPLIT, MOVED] finding derivative of complicated expression

Postby mrtn » Mon Apr 22, 2013 3:42 pm

Brilliant, maggiemagnet - thank you so much :)

I am having another one, costing me some trouble

Image

I would appreciate if someone could show me this ^^ :)

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stapel_eliz
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Postby stapel_eliz » Tue Apr 23, 2013 10:24 am

mrtn wrote:I am having another one, costing me some trouble



On what basis are you thinking that the posted "answer" is correct? Since there is a "d" variable in both the numerator and denominator of the left-hand side, it would appear that this is not completely simplified. (Were you in a more-advanced course, I would suspect that the answer represented a derivative.)

mrtn wrote:I would appreciate if someone could show me this ^^ :)

Please reply showing your work so far, so the volunteers can help you find where you're going astray. Thank you! :wink:

mrtn
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Re: Simplify expression

Postby mrtn » Wed Apr 24, 2013 7:58 am

Image

Does that make any sense?

Thank you in advance :)

nona.m.nona
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Re: [SPLIT, MOVED] finding derivative of complicated express

Postby nona.m.nona » Wed Apr 24, 2013 3:57 pm

Since your variable appears to be "Q", then "q" would be regarded (for purposes of differentiation) as a constant -- unless there is additional information for this exercise which has, to this point, been omitted.

Assuming this is correct, then your derivative of the first term within the third parenthetical on the right-hand side of the original equation should be reconsidered.

Thank you.


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