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If a ,\ b ,\ c are in A.P., find the v...

If `a ,\ b ,\ c` are in A.P., find the value of `|(2y+4, 5y+7, 8y+a),(3y+5, 6y+8, 9y+b),(4y+6, 7y+9 ,10y+c)|` .

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RD SHARMA ENGLISH-DETERMINANTS-All Questions
  1. Without expanding evaluate the determinant |sinalphacosalphasin(alp...

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  2. Without expanding evaluate the determinant |(a^x+a^-x)^2(a^x-a^-x)^2 1...

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  3. If a ,\ b ,\ c are in A.P., find the value of |(2y+4, 5y+7, 8y+a),(3...

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  4. Without expanding evaluate the determinant =|(265, 240, 219), (240, ...

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  5. If D1=|1 1 1 x^2 y^2 z^2 x y z| and D2=|1 1 1y z z xx y x y z| , with...

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  6. Let D=|Ax x^2 1 By y^2 1 Cz z^2 1| and D1=|A B C x y z yz zx xy| ...

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  7. If A=|[a, b, c],[ x, y, z],[ p, q, r]| and B=|[q, -b, y],[ -p, a, -x...

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  8. If A is a skew-symmetric matrix of odd order n , then |A|=O .

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  9. Prove that: |[0,a,-b],[-a,0,-c],[ b, c,0]|=0 .

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  10. Without expanding or evaluating show that |(0,b-a, c-a),( a-b,0,c-b)...

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  11. Without expanding, prove that |(a+b x, c+dx, p+q x), (a x+b, c x+d, ...

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  12. Prove that: |-a^2 ab ac ba -b^2 bc ...

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  13. Prove that: |(1, 1, 1),( 1, 1+x,1) ,(1, 1, 1+y)|=x y .

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  14. Evaluate: |(1,a ,a^2), (1,b,b^2) ,(1,c,c^2)| .

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  15. Show that : |[x, y, z ],[x^2,y^2,z^2],[x^3,y^3,z^3]|=x y z(x-y)(y-z)(z...

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  16. Prove that: |[alpha,beta,gamma],[alpha^2,beta^2,gamma^2],[beta+gamma,g...

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  17. In a triangleABC, if |(1,1,1),(1+sinA,1+sinB,1+sinC),(sinA+sin^2A,sinB...

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  18. In a A B C ,if|1 1 1 1+cosA 1+cosB 1+cosC cos^2A+A cos^2B+cosB cos^2...

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  19. Show that |[a ,b ,c],[ a^2,b^2,c^2],[bc, ca, ab]|=|[1, 1, 1],[a^2,b^2,...

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  20. If x!=y!=z and |x x^2 1+x^3 y y^2 1+y^3 z z^2 1+z^3|=0 , then prove th...

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