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OpenStudy (anonymous):
Let f(x)=10sin(x)+2cos(x). Find f'(x). Find f'(11pi/6).
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OpenStudy (anonymous):
f'(x)=10cosx-2sinx
OpenStudy (anonymous):
how did you get that answer, though? I'm thoroughly confused.
OpenStudy (anonymous):
the derivative of sin is cos
OpenStudy (anonymous):
the derivative of cos is -sin
OpenStudy (anonymous):
ohhh! We just did this in class!! Thanks so much!
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OpenStudy (anonymous):
then just plug in 11pi/6 to get the answer. you are welcome!!
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