I have an example where I have a function of 2 variables and I want to calculate the following second derrivative. I can do this example by hand (I think) and evaluate it a point say (2,1).
So at the point(2,1),
My question is, how do I do the same thing numerically so I can apply it to a more complex function. I have used the methods for a single variable before such as Numerical differentiation - Wikipedia, the free encyclopedia but am confused on how to solve this example numerically?