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If a != b != c, are value of x which sat...

If `a != b != c`, are value of x which satisfies the equation
`|(0,x -a,x -b),(x +a,0,x -c),(x +b,x +c,0)| = 0` is given by

A

`x = 0`

B

`x = c`

C

`x =b`

D

`x =a`

Text Solution

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The correct Answer is:
To solve the equation given by the determinant \[ \begin{vmatrix} 0 & x - a & x - b \\ x + a & 0 & x - c \\ x + b & x + c & 0 \end{vmatrix} = 0, \] we will proceed step by step. ### Step 1: Write down the determinant The determinant we need to evaluate is: \[ D = \begin{vmatrix} 0 & x - a & x - b \\ x + a & 0 & x - c \\ x + b & x + c & 0 \end{vmatrix} \] ### Step 2: Expand the determinant Using the property of determinants, we can expand along the first row: \[ D = 0 \cdot \begin{vmatrix} 0 & x - c \\ x + c & 0 \end{vmatrix} - (x - a) \cdot \begin{vmatrix} x + a & x - c \\ x + b & 0 \end{vmatrix} + (x - b) \cdot \begin{vmatrix} x + a & 0 \\ x + b & x + c \end{vmatrix} \] The first term is zero because it is multiplied by zero. ### Step 3: Calculate the remaining 2x2 determinants 1. For the second determinant: \[ \begin{vmatrix} x + a & x - c \\ x + b & 0 \end{vmatrix} = (x + a) \cdot 0 - (x - c)(x + b) = -(x - c)(x + b) \] 2. For the third determinant: \[ \begin{vmatrix} x + a & 0 \\ x + b & x + c \end{vmatrix} = (x + a)(x + c) - 0 \cdot (x + b) = (x + a)(x + c) \] ### Step 4: Substitute back into the determinant expression Now substituting back, we have: \[ D = -(x - a)(-(x - c)(x + b)) + (x - b)(x + a)(x + c) \] This simplifies to: \[ D = (x - a)(x - c)(x + b) + (x - b)(x + a)(x + c) \] ### Step 5: Set the determinant equal to zero Now we need to solve: \[ (x - a)(x - c)(x + b) + (x - b)(x + a)(x + c) = 0 \] ### Step 6: Find the values of x To find the values of \(x\) that satisfy this equation, we can test specific values. 1. **Testing \(x = 0\)**: \[ D = (0 - a)(0 - c)(0 + b) + (0 - b)(0 + a)(0 + c) \] \[ = (-a)(-c)(b) + (-b)(a)(c) = abc - abc = 0 \] Thus, \(x = 0\) satisfies the equation. ### Conclusion The value of \(x\) which satisfies the equation is: \[ \boxed{0} \]
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OBJECTIVE RD SHARMA-DETERMINANTS-Exercise
  1. The value of |(a,a^(2) - bc,1),(b,b^(2) - ca,1),(c,c^(2) - ab,1)|, is

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  2. If alpha + beta + gamma = pi, then the value of the determinant |(e^...

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  3. If a != b != c, are value of x which satisfies the equation |(0,x -a...

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  4. The repeated factor of the determinant |(y +z,x,y),(z +x,z,x),(x +y,...

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  5. The value of the determinant Delta = |((1 - a(1)^(3) b(1)^(3))/(1 - ...

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  6. The determinant Delta = |(b,c,b alpha +c),(c,d,c alpha + d),(b alpha...

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  7. Delta = |(1//a,1,bc),(1//b,1,ca),(1//c,1,ab)|=

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  8. If |(1 +ax,1 +bx,1 + bx),(1 +a(1) x,1 +b(1) x,1 + c(1) x),(1 + a(2) x,...

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  9. If a != 0, b!= 0, c!= 0, then |(1 +a,1,1),(1,1 +b,1),(1,1,1 +c)| is ...

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  10. If 1 + (1)/(a) + (1)/(b) + (1)/(c) = 0, then Delta = |(1 +a,1,1),(1,...

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  11. If a, b and c are all different from zero and Delta = |(1 +a,1,1),(1...

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  12. In a Delta ABC, a, b, c are sides and A, B, C are angles opposite to t...

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  13. If |(-12,0,lamda),(0,2,-1),(2,1,15)| = -360, then the value of lamda i...

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  14. If a(i), i=1,2,…..,9 are perfect odd squares, then |{:(a(1),a(2),a(3))...

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  15. If the maximum and minimum values of the determinant |(1 + sin^(2)x...

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  16. If [x] denote the greatest integer less than or equal to x then in ord...

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  17. If a, b gt 0 and Delta (x)= |(x,a,a),(b,x,a),(b,b,x)|, then

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  18. Let f(x) = ax^(2) + bx + c, a, b, c, in R and equation f(x) - x = 0 ha...

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  19. If g(x) = |(f(x + c),f(x + 2c),f(x + 3c)),(f(c),f(2c),f(3c)),(f(c),f'(...

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  20. If a^(2) + b^(2) + c^(2) = -2 and f(x) = |(1 + a^(2)x,(1 + b^(2))x,(1 ...

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