Advertisements
Advertisements
Question
Choose the correct answer from the given four options :
If `[(x + 2y, -y),(3x, 7)] = [(-4, 3),(6, 4)]` then the values of x and y are
Options
x = 2, y = 3
x = 2, y = – 3
x = – 2, y = 3
x = 3, y = 2
Solution
`[(x + 2y, -y),(3x, 7)] = [(-4, 3),(6, 4)]`
Comparing, we get
3x = 6
⇒ = 2
⇒ -y = 3
⇒ y = – 3
x = 2, y = -3.
APPEARS IN
RELATED QUESTIONS
Given A = `[(2, 0),(-1, 7)]` and I = `[(1, 0),(0, 1)]` and A2 = 9A + ml. Find m.
Find x and y if `[(x,3x),(y, 4y)] = [(5),(12)]`
Evaluate:
`[(cos 45°, sin 30°),(sqrt(2) cos 0°, sin 0°)] [(sin 45°, cos 90°),(sin 90°, cot 45°)]`
Given A = `[(2, -1),(2, 0)]`, B = `[(-3, 2),(4, 0)]` and C = `[(1, 0),(0, 2)]`, find the matrix X such that : A + X = 2B + C.
If A = [4 7] and B = [3 l], find: A - B
If P = (8 , 5),(7 , 2) , find Pt
Solve for x and y `[(-2,0), (3,1)][(-1), (2x)] +3[(-2), (1)] =2[(y), (3)]`
Find x and y, if `((x,3x),(y, 4y))((2),(1)) = ((5),(12))`.
Let A = `[(1 , 0),(2 , 1)]`, B = `[(2 , 3),(-1 , 0)]`. Find A2 + AB + B2
Find the values of a, b, c and d if `[(a + b, 3),(5 + c, ab)] = [(6, d),(-1, 8)]`
