Khan/khan-exercises — Issue #14489: Chain rule 1 - MY BACK HURTS
Author: KhanBugz
Created: 2012-02-23 10:47:31+00:00
State: open
Labels: chrome, other, win7

Reporter: HELP ME

I NEED MEDICINE

[chain_rule_1.html?seed=154&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/chain_rule_1.html?seed=154&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/chain_rule_1.html?seed=154&problem=0&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11

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