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posted by ken Thursday, November 6, 2008 at 10:40am.
find the derivative using quotient rule F(x) = (x - 7 x sqrt(x)) / sqrt(x)
F'(x) = [bottom*derivative of top - top *derivative of bottom] / bottom^2 =[x^.5 { 1-7(.5x x^-.5 +x^.5) } -(x-7x x^.5).5 x^-1.5 ]/ x etc
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