calculus
posted by ken .
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 { 17(.5x x^.5 +x^.5) } (x7x x^.5).5 x^1.5 ]/ x
etc
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