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
State, whether the following statement is true or false. If false, give a reason.
Transpose of a 2 × 1 matrix is a 2 × 1 matrix.
If `A = [(2),(5)], B = [(1),(4)]` and `C = [(6),(-2)]`, find A – C
Find x and y from the given equations:
`[(5, 2),(-1, y - 1)] - [(1, x - 1),(2, -3)] = [(4, 7),(-3, 2)]`
If M =`|(8,3),(9,7),(4,3)|` and N = `|(4,7),(5,3),(10,1)|` find M - N
If P= (8,5),(7,2) find : P + Pt
If P = `|(8,5),(7,2)|` find P - Pt
If A = `|(5,"r"),("p",7)|` , c and if A + B = (9,7),(5,8) , find the values of p,q,r and s.
If P =`|(1 , 2),(3 , 4)|` , Q = `|(5 , 1),(7 , 4)|` and R = `|(2 , 1),(4 , 2)|` find the value of P(Q + R)
If A = `[(1,0,0),(2,1,0),(3,3,1)]` then find A-1 by using elementary transformation .
`[(2 , 7, 8),(-1 , sqrt(2), 0)]`
