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Mathematics 8 Online
OpenStudy (imtant):

Solve -8sinx-8cosx=0?

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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