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OpenStudy (anonymous):
find the slope of the following curve 4xy+x^(3/2)y^(-1/2)=63 at the points (9, 1)
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OpenStudy (ranga):
Do implicit differentiation. Gather up the y' terms and express y' in terms of x and y. Substitute x = 9 and y = 1 to evaluate y' at (9, 1) which will be the slope of the curve at (9, 1).
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