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OpenStudy (anonymous):
Variables x and y are connected by the equation y=(2x-9)^3. Given that x is increasing at the rate of 4 units per second, find the rate of increase of y when x=7.
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OpenStudy (anonymous):
600
OpenStudy (anonymous):
You have to differentiate the equation using u-substitution.
OpenStudy (anonymous):
get dy/dx and then put value of x in that, finally multiply by 4 ie rate of increase of x
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