Advertisements
Advertisements
Question
If A = `|(1,3),(3,2)|` and B = `|(-2,3),(-4,1)|` find AB
Advertisements
Solution
A = `|(1,3),(3,2)|_(2 xx 2)` B = `|(-2,3),(-4,1)|_(2 xx 2)`
AB = `|(1,3),(3,2)| |(-2,3),(-4,1)|`
`= |(-2-12 , 3 + 3),(-6-8 , 9 + 2)| = |(-14 , 6),(-14 , 11)|_(2 xx 2)`
APPEARS IN
RELATED QUESTIONS
Solve for a, b and c; if `[(a, a - b),(b + c, 0)] = [(3, -1),(2, 0)]`
State, with reason, whether the following is true or false. A, B and C are matrices of order 2 × 2.
A . (B – C) = A . B – A . C
If M =`|(8,3),(9,7),(4,3)|` and N = `|(4,7),(5,3),(10,1)|` find M - N
Evaluate the following :
`|(2 , 3),(-4 , 0)| |(3 , -2),(-1 , 4)|`
Evaluate the following :
`|(0 , 1),(-1 , 2),(-2 , 0)| |(0 , -4 , 0),(3 , 0 , -1)|`
Let A = `|(3 , 2),(0 ,5)|` and B = `|(1 ,0),(1 ,2)|` , find (i) (A + B)(A - B) (ii) A2 - B2 . Is (i) equal to (ii) ?
Using the truth table statement, examine whether the statement pattern (p → q) ↔ (∼ p v q) is a tautology, a contradiction or a contingency.
`[(2, -1),(5, 1)]`
If a matrix has 4 elements, what are the possible order it can have?
If a matrix A = `[(0, 1),(2, -1)]` and matrix B = `[(3),(1)]`, then which of the following is possible:
