Khan/khan-exercises — Issue #7748: Quotient rule - uggly answer
Author: KhanBugz
Created: 2011-12-04 20:09:16+00:00
State: open
Labels: chrome, wrong-or-unclear

Reporter: juha.anttila@gmail.com

derivative of (tan/e^x)should not have e^x in the numerator in the final answer. It is similar to answering 3/27 instead of 1/9. compare
http://www.wolframalpha.com/input/?i=derivative%20tanx%2Fe%5Ex

[quotient_rule.html?seed=125&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quotient_rule.html?seed=125&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quotient_rule.html?seed=125&problem=0&debug&activity=%5B%5B%22correct-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%20%5C%5C%5C%22%3E%5C%5C%5C%5Cdfrac%7B(%5C%5C%5C%5Csec%5E%7B2%7D%20%7Bx%7D\)(e%5E%7Bx%7D)-(e%5E%7Bx%7D)(%5C%5C%5C%5Ctan%7Bx%7D)%7D%7B(e%5E%7Bx%7D)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C902%5D%5D)

["\\dfrac{(\\sec^{2} {x})(e^{x})-(e^{x})(\\tan{x})}{(e^{x})^2}"]

Mozilla/5.0 (X11; Linux i686) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

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