Evaluating functions at several points
wolfram-mathematica
Solution
Remember that Mathematica has a specific way of defining functions. In your case it would be `f[x_,y_]:=-4 x + x^2 - 4 y - y^2`. Then you could simply use `f[1,-2]` etc.
Problem
I want to evaluate f[x,y]=-4 x + x^2 - 4 y - y^2 at points (1,-2); (2,-3); (3,-2); (2,-1). I tried using Outer but for some reason it does not give me actual values. Help.