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If A=[[-1,3,5],[1,-3,-5],[-1,3,5]]Show t...

If `A=[[-1,3,5],[1,-3,-5],[-1,3,5]]`Show that `A^2=A.`

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SHARAM PUBLICATION-MODEL QUESTION PAPER 19-EXERCISE
  1. Differentiate y=tan^(-1).(sqrt(1+x^(2))+sqrt(1-x^(2)))/(sqrt(1+x^(2))-...

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  2. Find the points on the curve y = x^3 - 11x + 5 at which the equation o...

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  3. If A=[[-1,3,5],[1,-3,-5],[-1,3,5]]Show that A^2=A.

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  4. If [[x+y,x-2],[2x-z,0]]=[[2,5],[3,1]] then the values of x,y,z.

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  5. Prove that |{:(1+a,1,1),(1,1+b,1),(1,1,1+c):}|=abc(1+1/a+1/b+1/c)or(ab...

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  6. Prove that |(1, a, a^3),(1, b, b^3),(1, c, c^3)|= (a-b)(b-c)(c-a)(a+b+...

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  7. If A=[[2,1],[-1,3]] B=[[2,5],[-3,2]] find AB and BA.

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  8. If the sum of two unit vectors is a unit vectors find the magnitude of...

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  9. Find a vector of magnitude 5 units and parallel to the resultant of ve...

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  10. Show that [veca+vecbvecb+veccvecc+veca] = 2[vecavecbvecc]

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  11. Find the equation of the plane through the points (1, 2, -3), (2,3, -4...

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  12. If p is a prime and ab-=0 (mod p) then show that either a=0 (mod p) or...

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  13. If "sin"^(-1)(x/a) + "sin"^(-1) (y/b)=alpha "prove that" x^2/a^2+(2xy)...

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  14. Solve the following LPP graphically Maximize, Z=20x+30y Subject to...

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  15. [[2,5],[3,4]][[3,1],[-2,3]]=[[x,y],[1,z]] find x,y and z.

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  16. Using properties of determinants, prove the following abs{:(a^2, bc, a...

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  17. If x = (1-cos^2 theta)/(cos theta), y = (1-cos^(2n)theta)/(cos^n theta...

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  18. Find the tangent to the curve y = cos (x + y), 0 le x le 2pi which is ...

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  19. int(pi//6)^(pi//3)dx/(1+sqrtcotx)

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  20. Using integration, find the area bounded by the curve x^2 = 4y and the...

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