# calcxulus1

Find the critical points of the function. (Enter your answers as a comma-separated list.)
g(x) = square root(81 − x^2)

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1. y = (81-x^2)^.5

y' = .5(81-x^2)^-.5 (-2x)
= -x/sqrt(81-x^2)
what is denomination when x = -9
what is denominator when x=+9

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