Maths-
General
Easy
Question
If A =
and A2 + kI = 8A, then k equals
- 4
- 8
- ¼
- 1/16
The correct answer is: 8
To find the value of k.
Given, A =
and
+ kI = 8A.
x
+ k x
= 8 x 
+
= 
comparing on both sides,
16+k=24
k=8
Therefore, the value of k is 8.
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