Khan/khan-exercises — Issue #10852: Quotient rule - no answer is correct
Author: KhanBugz
Created: 2012-01-10 16:25:46+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

[quotient_rule.html?seed=39&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quotient_rule.html?seed=39&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/quotient_rule.html?seed=39&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C216%5D%2C%5B%22hint-activity%22%2C%220%22%2C44%5D%2C%5B%22hint-activity%22%2C%220%22%2C55%5D%2C%5B%22hint-activity%22%2C%220%22%2C58%5D%2C%5B%22hint-activity%22%2C%220%22%2C60%5D%2C%5B%22hint-activity%22%2C%220%22%2C64%5D%2C%5B%22hint-activity%22%2C%220%22%2C67%5D%2C%5B%22incorrect-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%5Ccos%7Bx%7D\)(-%5C%5C%5C%5Csin%7Bx%7D\)-(%5C%5C%5C%5Ccos%7Bx%7D\)(%5C%5C%5C%5Csin%7Bx%7D\)%7D%7B(%5C%5C%5C%5Ccos%7Bx%7D\)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C330%5D%2C%5B%22incorrect-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%5Ccos%7Bx%7D\)(-%5C%5C%5C%5Csin%7Bx%7D\)%2B(%5C%5C%5C%5Ccos%7Bx%7D\)(%5C%5C%5C%5Csin%7Bx%7D\)%7D%7B(%5C%5C%5C%5Csin%7Bx%7D\)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C7%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C17%5D%2C%5B%22incorrect-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%5Ccos%7Bx%7D\)%5E2%2B(-%5C%5C%5C%5Csin%7Bx%7D\)(%5C%5C%5C%5Csin%7Bx%7D\)%7D%7B(%5C%5C%5C%5Ccos%7Bx%7D\)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C6%5D%2C%5B%22incorrect-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%5Ccos%7Bx%7D\)%5E2%2B(-%5C%5C%5C%5Csin%7Bx%7D\)(%5C%5C%5C%5Csin%7Bx%7D\)%7D%7B(%5C%5C%5C%5Ccos%7Bx%7D\)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C3%5D%2C%5B%22incorrect-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%5Ccos%7Bx%7D\)(-%5C%5C%5C%5Csin%7Bx%7D\)%2B(%5C%5C%5C%5Ccos%7Bx%7D\)(%5C%5C%5C%5Csin%7Bx%7D\)%7D%7B(%5C%5C%5C%5Csin%7Bx%7D\)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C2%5D%2C%5B%22incorrect-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%5Ccos%7Bx%7D\)(-%5C%5C%5C%5Csin%7Bx%7D\)-(%5C%5C%5C%5Ccos%7Bx%7D\)(%5C%5C%5C%5Csin%7Bx%7D\)%7D%7B(%5C%5C%5C%5Ccos%7Bx%7D\)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C3%5D%2C%5B%22incorrect-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%5Ccos%7Bx%7D\)(-%5C%5C%5C%5Csin%7Bx%7D\)-(%5C%5C%5C%5Ccos%7Bx%7D\)(%5C%5C%5C%5Csin%7Bx%7D\)%7D%7B(%5C%5C%5C%5Ccos%7Bx%7D\)%5E2%7D%3C%2Fcode%3E%5C%22%22%2C11171%5D%5D)

["None of the above.","\\dfrac{(\\cos{x})(-\\sin{x})-(\\cos{x})(\\sin{x})}{(\\cos{x})^2}","\\dfrac{(\\cos{x})(-\\sin{x})+(\\cos{x})(\\sin{x})}{(\\sin{x})^2}","None of the above.","\\dfrac{(\\cos{x})^2+(-\\sin{x})(\\sin{x})}{(\\cos{x})^2}","\\dfrac{(\\cos{x})^2+(-\\sin{x})(\\sin{x})}{(\\cos{x})^2}","\\dfrac{(\\cos{x})(-\\sin{x})+(\\cos{x})(\\sin{x})}{(\\sin{x})^2}","\\dfrac{(\\cos{x})(-\\sin{x})-(\\cos{x})(\\sin{x})}{(\\cos{x})^2}","\\dfrac{(\\cos{x})(-\\sin{x})-(\\cos{x})(\\sin{x})}{(\\cos{x})^2}"]

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