At every point P in the domain of a function f of x comma y, this function is normal to the level curve through P. This function is orthogonal to a surface at any point.
At every point P in the domain of a function f of x comma y, this function is normal to the level curve through P. This function is orthogonal to a surface at any point. The dot product of this function and a vector is known as a directional derivative. When applied to scalar functions, this operation yields a vector field. This operator gives the direction of greatest change. In two dimensions, this operator is defined as the partial of f with respect to x of x-hat plus the partial of f with respect to y of y-hat. For 10 points, identify this operator symbolized del.
At every point P in the domain of a function f of x comma y, this function is normal to the level curve through P. This function is orthogonal to a surface at any point.
gradient [prompt on del]