Let us suppose we are given a function and we have to find the gradient of this function at a particular point
so gradient can be calculated by
and after that we will substitute (2,-3) in it and we will get the value of gradient
If the gradient of a vector is not zero, then it will be perpendicular to the tangent line at (2,-3) of the curve that passes through the point, it tells us that the curve changes fastest in the direction of the gradient.
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