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|(x,a,x+a),(y,b,y+b),(z,c,z+c)| = 0...

`|(x,a,x+a),(y,b,y+b),(z,c,z+c)| = 0`

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|(x, 4, y+z),(y, 4, z+x),(z, 4, x+y)|=

Prove that |(x,x^2,yz),(y,y^2,zx),(z,z^2,xy)|= (x-y)(y-z)(z-x)(xy + yz + zx) .

If x,y,z are different and Delta = |(x, x^2, 1+x^3),(y,y^2,1+y^3),(z,z^2,1+z^3)|= 0 then show that 1 + xyz = 0

|(b+c, q+r, y+z),(c+a,r+p,z +x),(a+b,p+q,x+y)|=2|(a,p,x),(b,q,y),(c,r,z)|

Using the property of determinants and without expanding {:|( b+c,q+r,y+z),( c+a,r+p,z+x),( a+b,p+q,x+y) |:}=2 {:|(a,p,x),( b,q,y),(c,r,z)|:}

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Without expanding prove that Delta ={:|( x+y,y+z,z+x) ,( z,x,y),( 1,1,1) |:} =0

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SUBHASH PUBLICATION-DETERMINANT-FOUR MARKS QUESTIONS WITH ANSWERS
  1. Prove that |(1,1,1),(a,b,c),(a^3,b^3,c^3)| = (a - b)(b-c)(c-a)(a+b+c).

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  2. Prove that |(x,x^2,yz),(y,y^2,zx),(z,z^2,xy)|= (x-y)(y-z)(z-x)(xy + yz...

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  3. |(x+4, 2x, 2x),(2x, x +4, 2x),(2x, 2x ,x+4)| = (5x + 4)(4 - x)^(2).

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  4. |(y +k, y , y),(y, y + k, y),(y, y, y+k)|= k^(2)(3y + k).

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  5. |(a-b-c, 2a, 2a),(2b, b-c-a,2b),(2c,2c,c-a-b)| = (a + b + c)^(3).

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  6. Prove that |{:(,x+y+2z,x,y),(,z,y+z+2x,y),(,z,x,z+x+2y):}|=2(x+y+z)^(3...

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  7. Prove that |(1,x,x^2),(x^2,1,x),(x,x^2,1)|=(1-x^3)^2.

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  8. |(1+a^(2)-b^(2), 2ab, -2b),(2a, 1 -a^(2)+b^(2),2a),(2b, -2a, 1-a^2-b^2...

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  9. |(a^(2)+1,ab,ac),(ab,b^2+1,bc),(ca,cb,c^2+1)|= 1 + a^2 + b^2 + c^2.

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  10. Prove that |(-a^2,ab,ac),(bc,-b^2,bc),(ca,cb,-c^2)|=4a^(2)b^(2) c^(2).

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  11. |(b+c, q+r, y+z),(c+a,r+p,z +x),(a+b,p+q,x+y)|=2|(a,p,x),(b,q,y),(c,r,...

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  12. |(1,bc,a(b+c)),(1,ca,b(c+a)),(1,ab,c(a+b))|= 0

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  13. Show that |(1+a,1,1),(1,1+b,1),(1,1,1+c)| = abc(1 + 1/a + 1/b + 1/c) =...

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  14. Evaluate Delta -|(1,a,bc),(1,b,ca),(1,c,ab)|

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  15. Prove that |(b+c,a,a),(b,c+a,b),(c,c,a+b)|= 4ac

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  16. If x,y,z are different and Delta = |(x, x^2, 1+x^3),(y,y^2,1+y^3),(z,z...

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  17. |(a - b, b-c,c-a),(b-c,c-a,a-b),(c-a,a-b,b-c)|=0

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  18. |(0,a,-b),(-a,0,-c),(b,c,0)| = 0

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  19. |(x,a,x+a),(y,b,y+b),(z,c,z+c)| = 0

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  20. Show that |(x,p,q),(p,x,x),(q,q,x)| = (x - p)(x^(2) + px - 2q^2)

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