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OpenStudy (anonymous):
f(x)=lnsqrt(4x-5/9x+9) find the deriv of f
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OpenStudy (lgbasallote):
chain rule will tell you... let y = ln(sqrt(4x-5/9x+9)) x = sqrt(4x-5/9x+9) w = 4x -5 z = 9x + 9 so (zdw - wdz)/xz^2 just substitute back
OpenStudy (lgbasallote):
btw...dw = 4 and dz = 9
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