Week 9 - Matrices

Question 1

How do you findthe determinate of any sized matrices?

Answer 1

2nd video, 4:15. Take the first number (f1) and use the matrices of what’s left over. Then subtract the second number in the row (f2) and use the matrices of what’s left over and start again alternating + and -.

Question 2

How do you determine extremea in 2nd order conditions?

Answer 2

H1<0 H2>0 and H3<0, maxima. All H>0, minimum. Anything else is indeterminante.