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Using Implicit Differentiation On y=cos(x+y),yy = \cos ( x + y ) , y ^ { \prime }

Question 72

Multiple Choice

Using implicit differentiation on y=cos(x+y) ,yy = \cos ( x + y ) , y ^ { \prime } is


A) sin(x+y) 1+sin(x+y) \frac { \sin ( x + y ) } { 1 + \sin ( x + y ) }
B) sin(x+y) 1sin(x+y) \frac { \sin ( x + y ) } { 1 - \sin ( x + y ) }
C) sin(x+y) sin(x+y) 1\frac { \sin ( x + y ) } { \sin ( x + y ) - 1 }
D) -1
E) sin(x+y) 1+sin(x+y) - \frac { \sin ( x + y ) } { 1 + \sin ( x + y ) }

Correct Answer:

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