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OpenStudy (imtant):
Solve -8sinx-8cosx=0?
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OpenStudy (dumbcow):
-8sin = 8cos sin = -cos tan = -1 x = 3pi/4 , 7pi/4
OpenStudy (imtant):
Okay,I got it. But do you think my answer for the second derivative for y=cos x+sin x is d^2y/dx^2= -cosx-sinx?
OpenStudy (dumbcow):
yes that is 2nd derivative :)
OpenStudy (imtant):
Okay thanks dumbcow. :)
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