How to find Inverse of a matrix of 3x3?

Question

do it for me

Answer 1

1. Create a programm that calculates the determiant (not really challenging when you just use 3x3 matrices).

2. Check if your matrix is invertible. You do this by checking if the determinant is 0 or not.

3. If it is invertible, calculate the inverse by using a formula beginning with 1/det(A), check it in the internet.

Remarks:
1. I would implement the whole thing using templates.
2. I would use the C++11 container std::array<T,n>. If you know the concrete size there is no need for using std::vector<T>