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Engineering Maths · Q6

Linear Algebra

Engineering and GATE · Engineering Maths · question 6

Q6

If \[ R = [ array*20c 1&0& - 1 \\ 2&1& - 1 \\ 2&3&2 array ],\] then top row of R-1 is

If {\text{R}} = \left[ {\begin{array}{*{20}{c}} 1&0&{ - 1} \\ 2&1&{ - 1} \\ 2&3&2 \end{array}} \right],    then top row of R-1 is
A.
[5 6 4]
B.
[5 -3 1]
Answer
C.
[2 0 -1]
D.
\left[ {\begin{array}{*{20}{c}} 2&{ - 1}&{\frac{1}{2}} \end{array}} \right]

Answer: Option B

Solution

Answer: Option B
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