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OpenStudy (anonymous):
what is the derivative of cos x?
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OpenStudy (experimentx):
-sin x
OpenStudy (anonymous):
ahhh...ok thanks!!
OpenStudy (anonymous):
is the derivative of sin x is cos x?
OpenStudy (experimentx):
go with the first principle |dw:1342964756594:dw| if you do some manipulation with cos C - cos D you should be able to get the requited formula
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