Suppose you want to use implicit differentiation to find dx ) and that: sin(x + y) = cos(xy) Which of the following is the result after differentiating both sides with respect to x ? O cos ( x + y) ax dy = - sin(xy) (1+ O cos( x + dx ) = -sin( 1 + dx) O cos(x + y) = - sin(xy) dx O cos ( x + y) ( 1 + ax ) = - sin(xy) (y + xax O cos ( 1 + = - sin(y + xax O cos(1 + y) 7 = - sin(x + y)