**DEL OPERATOR**

Vector differential operator `del’ is represented by a symbol . Its another name is `nabla’. For three dimensional case, it is defined as

= id/dx + jd/dy + kd/dz

where I, j, k are unit vectors in the directions of co-ordinate axis X, Y and Z respectively.

Del is operated in three ways *viz*, gradient, divergence and curl, which we will discuss in next three sections.

**GRADIENT OF A SCALAR Continue reading “Del operator and gradient”**