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Find dydx\frac { d y } { d x } Of y=uy = \sqrt { u }

Question 62

Multiple Choice

Find dydx\frac { d y } { d x } of y=uy = \sqrt { u } , u=9x2u = 9 - x ^ { 2 } .


A) x9x2\frac { x } { \sqrt { 9 - x ^ { 2 } } }
B) 129x2\frac { 1 } { 2 \sqrt { 9 - x ^ { 2 } } }
C) x9x2\frac { - x } { \sqrt { 9 - x ^ { 2 } } }
D) 129x2- \frac { 1 } { 2 \sqrt { 9 - x ^ { 2 } } }
E) none of these choices

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