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Engineering Maths · Q7

Linear Algebra

Engineering and GATE · Engineering Maths · question 7

Q7

Let, \[ A = [ array*20c 2& - 0.1 \\ 0&3 array ]\] and \[ A^ - 1 = [ array*20c 1/2& a \\ 0& b array ].\] Then (a + b) = ?

Let, {\text{A}} = \left[ {\begin{array}{*{20}{c}} 2&{ - 0.1} \\ 0&3 \end{array}} \right]   and {{\text{A}}^{ - 1}} = \left[ {\begin{array}{*{20}{c}} {\frac{1}{2}}&{\text{a}} \\ 0&{\text{b}} \end{array}} \right].
Then (a + b) = ?
A.
Answer
B.
C.
D.

Answer: Option A

Solution

Answer: Option A
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