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Let A+2B=[(1,2,0),(6,-1,3),(-5,3,1)] and...

Let `A+2B=[(1,2,0),(6,-1,3),(-5,3,1)] and 2A-B=[(2,-1,5),(2,-1,6),(0,1,2)],` then find `tr(A)-tr(B).`

A

1

B

3

C

0

D

2

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-MATHEMATICS SECTION A
  1. The real valued function f(x)=(cosec^(-1)x)/(sqrt(x-[x])), where [x] d...

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  2. The value of is equal to

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  3. Let A+2B=[(1,2,0),(6,-1,3),(-5,3,1)] and 2A-B=[(2,-1,5),(2,-1,6),(0,1,...

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  4. If lim(xto0)(sin^(-1)x-tan^(-1)x)/(3x^3) is equal to L, then the value...

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  5. A vector veca has components 3p and 1 with rrespect to a rectangular c...

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  6. If alpha,beta are natural numbers such that 100^(alpha)-199beta=(100)(...

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  7. If the equation aabsz^2+bar(baralphaz+alphabarz)+d=0 represents a ci...

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  8. The differential equation satisfied by the system of parabolas y^2=4a(...

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  9. Let (1+x+2x^2)^20=a0+a1x+a2x^2+....+a40x^40. " Then, "a1+a3+a5.....+a3...

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  10. The sum of all the 4-digit distinct numbers that can be formed with th...

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  11. If the functions are defined as f(x)=sqrtx and g(x) = sqrt(1-x), then ...

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  12. For the four circles M, N, O and P, following four equations are given...

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  13. If x, y, z are in arithmetic progression with common difference d, x n...

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  14. Tha value of the limit lim(theta to 0) (tan(pi cos^(2)theta))/(sin (2p...

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  15. Let S(1), S(2) and S(3) be three sets defined as S(1)={z in CC:|z-1|...

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  16. Let L be a tangent line to the parabola y^(2)=4x - 20 at (6, 2). If L ...

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  17. Let the tangent to the circle x^(2) + y^(2) = 25 at the point R(3, 4) ...

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  18. If the sides AB, BC and CA of a triangle ABC have 3, 5 and 6 interior ...

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  19. Let O be the origin. Let vec(OP) = x hati+y hati-hatk and vec(OQ) = -h...

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  20. If the curve y=y(x) is the solution of the differential equation 2(x^...

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