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Prove that: |[x+y,x,x],[5x+4y,4x,2x],[10...

Prove that: `|[x+y,x,x],[5x+4y,4x,2x],[10x+8y,8x,3x]|=x^3`.

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BETTER CHOICE PUBLICATION-DETERMINANTS -ASSIGNMENT (MOST IMPORTANT QUESTIONS FOR PRACTICE) (SECTION III)
  1. The value of the det. |[2,a,abc],[2,b,bca],[2,c,cab]| is

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  2. Using the property of determinants and without expanding , prove that:...

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  3. Prove that: |[x+y,x,x],[5x+4y,4x,2x],[10x+8y,8x,3x]|=x^3.

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  4. Without expanding, prove the following |(x+4,x,x),(x,x+4,x),(x,x,x+...

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  5. Evaluate |[1,x,y],[1,x+y,y],[1,x,x+y]|

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  6. Prove that |[b+c,a,a],[b,c+a,b],[c,c,a+b]| = 4abc

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  7. Prove that: |[-a^2, ab,ac],[ba,-b^2,bc],[ca,cb,-c^2]|=4a^2b^2c^2

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  8. Without expanding, prove the following |(0,ab^2,ac^2),(a^2b,0,bc^2)...

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  9. Without expanding, prove the following |(y+z,z,y),(z,z+x,x),(y,x,x+...

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  10. Without expanding, prove the following |(a,a+b,a+2b),(a+2b,a,a+b),(...

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  11. Prove that: |[1,1+p,1+p+q],[2,3+2p,4+3p+2q],[3,6+3p,10+6p+3q]|=1

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  12. Without expanding, prove the following |(1+a^2-b^2,2ab,-2b),(2ab,1-...

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  13. Without expanding, prove the following |(x,x+y,x+2y),(x+2y,x,x+y),(...

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

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  15. Without expanding, prove the following |(1,a,a^3),(1,b,b^3),(1,c,c^...

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  16. Without expanding, prove the following |(x,y,z),(x^2,y^2,z^2),(x^3,...

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  17. Without expanding, prove the following |(1,1,1),(alpha,beta,gamma),...

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  18. Without expanding, prove the following |(a,b,c),(a^2,b^2,c^2),(bc,c...

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  19. Without expanding, prove the following |(a^3+1,a^2,a),(b^3+1,b^2,b)...

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  20. Without expanding, prove the following |(b+c,c+a,a+b),(q+r,r+p,p+q)...

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