Advertisements
Advertisements
प्रश्न
If P =`|(1 , 2),(3 , 4)|` , Q = `|(5 , 1),(7 , 4)|` and R = `|(2 , 1),(4 , 2)|` find the value of P(Q + R)
Advertisements
उत्तर
P =`|(1 , 2),(3 , 4)|_(2 xx 2)` , Q = `|(5 , 1),(7 , 4)|_(2 xx 2)` R = `|(2 , 1),(4 , 2)|_(2 xx 2)`
Q + R = `|(5 , 1),(7 , 4)| + |(2 , 1),(4 , 2)|`
`= |(7 , 2),(2 , 6)|`
P(Q + R) = `|(1 , 2),(3 , 4)| |(7 , 2),(2 , 6)|`
`= |(7 + 22 , 2 + 12),(21 + 44 , 6 + 24)|`
`= |(29,14),(65,30)|_(2 xx 2)`
APPEARS IN
संबंधित प्रश्न
State, whether the following statement is true or false. If false, give a reason.
The matrices A2 × 3 and B2 × 3 are conformable for subtraction.
If A = `[(8, -3)]` and B = `[(4, -5)]`; find A + B
Wherever possible, write the following as a single matrix.
`[(2, 3, 4),(5, 6, 7)] - [(0, 2, 3),(6, -1, 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
State, with reason, whether the following is true or false. A, B and C are matrices of order 2 × 2.
A2 – B2 = (A + B) (A – B)
Classify the following rnatrix :
`|(2,1),(0 , 6),(8 , 7) |`
If M =`|(8,3),(9,7),(4,3)|` and N = `|(4,7),(5,3),(10,1)|` find M - N
Evaluate the following :
`|(0 , 1),(-1 , 2),(-2 , 0)| |(0 , -4 , 0),(3 , 0 , -1)|`
Find the adjoint of the matrix `"A" = [(2,-3),(3,5)]`
`[(2 ,- 4),(0 ,0),(1 , 7)]`
