Given that z = Z (x, y) is determined by sin (XY) + Z ^ 2 = sin (x + Z), the partial derivative of Z with respect to X is obtained

Given that z = Z (x, y) is determined by sin (XY) + Z ^ 2 = sin (x + Z), the partial derivative of Z with respect to X is obtained

sin(xy)+z^2=sin(x+z)
ycos(xy)+2z (δz/δx) = [ 1+(δz/δx) ] cos(x+z)
[2z - cos(x+z)](δz/δx) = cos(x+z) - ycos(xy)
δz/δx = [cos(x+z) - ycos(xy)]/[2z - cos(x+z)]