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Asked by Brian

A point is moving along the graph of y = 1/(1 + x^2) so that dxldt = 2 centimeters per minute. Find dy/dt for the following values of x.
(a) X = -2
8 years ago

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Answered by Steve
well,

dy/dt = -2x/(1+x^2)^2 dx/dt

so plug in x = -2
8 years ago
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A point is moving along the graph of y = 1/(1 + x^2) so that dxldt = 2 centimeters per minute. Find dy/dt for the following values of x.
(a) X = -2

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