Use implicit differentiation to find dz/dx and dz/dy. xyz = cos(x + y + z)
Follow Math Help Forum on Facebook and Google+
We are looking for partial derivatives let dz/dx be the partial derivative of z wrt x For dz/dx think of z = f(x,y) xyz = cos(x + y + z) yz + xydz/dx = sin(x+y+z)(1 + dz/dx) For dz/dy think y = f(x,z) yz + xzdz/dx = sin(x+y+z)(1 + dz/dx)
View Tag Cloud