Question

what is physical significance of partial differentiation?

Answer 1

To solve the Maxwell's equations, for example...

Answer 2

Geometrically speaking,
∂f∂x
may be interpreted as the slope of the tangent line to a surface moving in the x-direction, and
∂f∂y
may be interpreted as the slope of the tangent line to a surface moving in the y-direction. A picture is worth a thousand words. In the attached picture, we fix a point P. If we decide to move parallel to the x-axis away from P, the line we walk along has slope equally the partial derivative of f with respect to x at the point P.

Answer 3

thanks....