Advertisements
Advertisements
प्रश्न
If A = `|(1,3),(3,2)|` and B = `|(-2,3),(-4,1)|` find AB
Advertisements
उत्तर
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
संबंधित प्रश्न
If `A = [(2),(5)], B = [(1),(4)]` and `C = [(6),(-2)]`, find B + C
If `A = [(2),(5)], B = [(1),(4)]` and `C = [(6),(-2)]`, find A + B – C
Find x and y from the given equations:
`[(5, 2),(-1, y - 1)] - [(1, x - 1),(2, -3)] = [(4, 7),(-3, 2)]`
Given : M = `[(5, -3),(-2, 4)]`, find its transpose matrix Mt. If possible, find Mt – M
State, with reason, whether the following is true or false. A, B and C are matrices of order 2 × 2.
(B . C) . A = B . (C . A)
If `A = [(2),(5)], B = [(1),(4)]` and `C = [(6),(-2)]`, find A – B + C
If M = `[(2,1),(1,-2)] `; find M2, M3 and M5.
Evaluate the following :
`|(2,1) ,(3,2),(1 , 1)| |(1 , -2 , 1),(2 , 1 , 3)|`
Write the negation of the following statements :
(a) Radha likes tea or coffee.
(b) `∃x cc` R such that x + 3 ≥ 10.
[2 3 – 7]
