a. If C is the cofactor matrix of A, give a formula for det C in terms of det A. b. Let C = 1 1 2 0 3 1 1 0 1 . Can there be a matrix A with cofactor matrix C and det A = 3? Find a matrix A with positive determinant and cofactor matrix C.

Data Analysis Formulas Midterm 1 ▯ ▯ ▯ (▯▯▯▯) • Sample Variance- = ▯▯▯ (▯▯▯) ▯ (▯▯▯▯)▯ • Sample Standard Deviation- = ▯▯▯ (▯▯▯) c • P(E) (Independent event)= 1-P(E ) ▯(▯∩▯) • Conditional Probability= (/) = ▯(▯) • Probability= + ( ) = 1 ▯ • Probability= (/)() + (