We have a real 2x2 matrix A with 2 distinct real eigenvalues, lambda1 and lambda 2. explain the formula detA = lambda1(lambda 2) geometrically, thinking of module(detA) as an explansion facor. illustrate your explanation with a sketch. can you explain this similarly for 3x3 matrices?
i dont even know where to begin! and thanks for the help in advance!