Hi! Could anyone help me with this question? I'm unable to sleep as I haven't found the solution!

Find the first and second-degree Taylor polynomials of

f(x, y) = e^(-x^2 - y^2)

at (0, 0). I know I've got to use the Taylor formula for function of 2 variables but as my understanding is weak, I'm unable to do so.

Any help is much appreciated!!

Thank you!!