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OpenStudy (anonymous):
Differentiate: f(x)=-x+tanx. I tried using the differentiation rules but I got -x+sec^2x, which isn't the correct answer. help?
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OpenStudy (anonymous):
Where do u get the -x?
OpenStudy (anonymous):
are you supposed to find the derivative of that too? Even so, how did they get the answer tan^2 x?
OpenStudy (anonymous):
OHH wait i see, the pythagorean identities. never mind.
OpenStudy (anonymous):
Yes you find the derivative of that as well
OpenStudy (anonymous):
Yup
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OpenStudy (anonymous):
Good job! Glad you figud it out
OpenStudy (anonymous):
*figured
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