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 Use implicit differentiation to find dy/dx and d2y/dx2\text { Use implicit differentiation to find } d y / d x \text { and } \mathrm { d } ^ { 2 } y / d x ^ { 2 } \text {. }

Question 385

Multiple Choice

 Use implicit differentiation to find dy/dx and d2y/dx2\text { Use implicit differentiation to find } d y / d x \text { and } \mathrm { d } ^ { 2 } y / d x ^ { 2 } \text {. }
- x2+y2=5x ^ { 2 } + y ^ { 2 } = 5 , at the point (2,1) ( 2,1 )


A) dydx=2;d2ydx2=1\frac { d y } { d x } = - 2 ; \frac { d ^ { 2 } y } { d x ^ { 2 } } = 1
B) dydx=2;d2ydx2=5\frac { d y } { d x } = 2 ; \frac { d ^ { 2 } y } { d x ^ { 2 } } = 5
C) dydx=12;d2ydx2=0\frac { \mathrm { dy } } { \mathrm { dx } } = - \frac { 1 } { 2 } ; \frac { \mathrm { d } ^ { 2 } \mathrm { y } } { \mathrm { dx } ^ { 2 } } = 0
D) dydx=2;d2ydx2=5\frac { d y } { d x } = - 2 ; \frac { d ^ { 2 } y } { d x ^ { 2 } } = - 5

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