Slope3d

[ \nabla f = \left( \frac\partial f\partial x, \frac\partial f\partial y \right) ]

If you're dealing with a 3D slope in a mathematical context, you might represent a line in 3D space with parametric equations: $$x = x_0 + at$$ $$y = y_0 + bt$$ $$z = z_0 + ct$$ slope3d