Let the matrices A,..., P be given as at the beginning of the set of problems following Section 1.7.
Evaluate each expression that is meaningful:
a) AB.
b) CA.
c) AC.
d) CD and DC.
e) CE and EC.
f) AI.
g) IL.
h) 21 + 3GL.
i) C2 − 3C – 10C0.
j) E(E – 5I)
k) LNI.
l) MPG.
m) HL + J.
n) KA.
o) OC + N.
p) E2.
q) E3.
r) E4.
s) HELP.
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