Please i need the codes for calculating or finding the determinant of 2*2 matrix

Question

Coders pls am new both to the forum and to programming, kind help me with the codes ASAP.
Thanks

Answer 1

if you represent it in a 2×2 rray, then d = m[0][0]*m[1][1]-m[0][1]*m[1][0] , where m is the matrix