IfA=
[
2 a -3
0 2 5
1 1 3
],then find the value of a for which A
-1 exists.
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1
Answer:
a= -9/5
Step-by-step explanation:
A = [2 a -3
0 2 5
1 1 3]
A. = 2(6-5) -a(0-5) -3(0-2)
= 2 +5a +6
A = 5a +8
given that A = -1
5a +8 = -1
a= -9/5
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