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OpenStudy (anonymous):
If f(x)=5x+2/x, then f′(4)= Use this to find the equation of the tangent line to the curve y=5x+2/x at the point (4,20.5). Write your answer in the form: y=mx+b, where m is the slope and b is the y-intercept.
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OpenStudy (dumbcow):
ok first use quotient rule to find f'(x)
OpenStudy (dumbcow):
(f'g - fg')/ g^2
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