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Mathematics 12 Online
OpenStudy (anonymous):

can some one help me find the derivative of this question and its slope at 5pi/6

OpenStudy (anonymous):

\[2+\cos2x\]

OpenStudy (anonymous):

yes. i got -2sin2x

OpenStudy (anonymous):

is it right?

OpenStudy (whpalmer4):

Good! Now evaluate that at x = 5pi/6

OpenStudy (anonymous):

i did, but i don't get the answer my book has.

OpenStudy (anonymous):

|dw:1370807764977:dw|

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