CBSE Class 12 Math 2011 Solved Paper

Question : 5 of 29

Marks: +1, -0

Write

A^{-1}

for A =

[\table 2,5;1,3]

Solution:

A =

[\table 2,5;1,3]

A^{-1}

1/{|A|} [\table 3,-5;-1,2]

1/{[(2×3)-(1×5)]}

[\table 3,-5;-1,2]

1/(6-5)

[\table 3,-5;-1,2]

A^{-1}

[\table 3,-5;-1,2]

Go to Question:

Prev Question

Next Question