ASSIGNMENT 5
SOCI 708 -- Fall 2006
Use the following matrices and vectors to solve the problems below.
a= ⎡ 3 8 ⎤ e= ⎡-2 –3 ⎤ Q= ⎡ 18 27 ⎤
5 2 ⎣ 7 8 ⎦ 4 6
⎣ 7 4 ⎦ ⎣ 14 2 ⎦
b= ⎡ 11 7 ⎤ M= ⎡ 10 5 ⎤ R= ⎡ 25 30 ⎤
8 1 ⎣ 15 20 ⎦ ⎣ 35 40 ⎦
⎣ 2 6 ⎦
c= 3, a scalar N= [ 9 0 1 ] d= ⎡ 3 2 ⎤
7 4
⎣ 1 1 ⎦
P= ⎡ 1 0 0 ⎤ O= ⎡ 0 0 ⎤
0 1 0 ⎣ 0 0 ⎦
⎣ 0 0 1 ⎦
1. Calculate ...
a. R - M i. N x Q
b. M+ R j. P x Q
c. a + b k. c + e
d. d' l. e x d
e. 3 x Q m. M x R
f. d x b n. Q'
g. P x P o. Q x P
h. e + O p. O x M
2. Calculate the determinant of R.
3. Calculate the trace of M.
4. What is R x R-1 ?
5. Check your answers to a, b, d, i and o and number 4 using Stata.
Due date: October 27
