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The equation to the pair of lines perpen...

The equation to the pair of lines perpendicular to the pair of lines `3x^(2)-4xy+y^(2)=0`, is

A

`x^(2)+4xy+3y^(2)=0`

B

`x^(2)-4xy-3y^(2)=0`

C

`x^(2)+4xy+y^(2)=0`

D

none of these

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The correct Answer is:
To find the equation of the pair of lines that are perpendicular to the given pair of lines represented by the equation \(3x^2 - 4xy + y^2 = 0\), we can follow these steps: ### Step 1: Identify the coefficients The given equation is in the form \(Ax^2 + Bxy + Cy^2 = 0\), where: - \(A = 3\) - \(B = -4\) - \(C = 1\) ### Step 2: Change the coefficients To find the equation of the pair of lines that are perpendicular to the original lines, we will change the coefficients according to the following rules: - The coefficient of \(x^2\) becomes the coefficient of \(y^2\). - The coefficient of \(y^2\) becomes the coefficient of \(x^2\). - The sign of the coefficient of \(xy\) changes. Thus, we will have: - New coefficient of \(x^2\) = \(C = 1\) - New coefficient of \(y^2\) = \(A = 3\) - New coefficient of \(xy\) = \(-B = 4\) ### Step 3: Write the new equation Using the new coefficients, we can write the equation of the pair of lines that are perpendicular: \[ 1x^2 + 4xy + 3y^2 = 0 \] or simply, \[ x^2 + 4xy + 3y^2 = 0 \] ### Step 4: Conclusion Thus, the equation of the pair of lines that are perpendicular to the given pair of lines is: \[ x^2 + 4xy + 3y^2 = 0 \]

To find the equation of the pair of lines that are perpendicular to the given pair of lines represented by the equation \(3x^2 - 4xy + y^2 = 0\), we can follow these steps: ### Step 1: Identify the coefficients The given equation is in the form \(Ax^2 + Bxy + Cy^2 = 0\), where: - \(A = 3\) - \(B = -4\) - \(C = 1\) ...
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OBJECTIVE RD SHARMA ENGLISH-PAIR OF STRAIGHT LINES-Chapter Test
  1. The equation to the pair of lines perpendicular to the pair of lines 3...

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  2. If the lines given by ax^(2)+2hxy+by^(2)=0 are equally inclined to the...

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  3. The equation to the striaght lines passing through the origin and maki...

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  4. Prove that the limiting points of the system x^(2)+y^(2)+2gx+c+lamda(x...

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  5. If the area of the triangle formed by the pair of lines 8x^2 - 6xy + y...

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  6. The equation to the pair of straight lines bisecting the angles betwe...

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  7. If the pair of lines sqrt(3)x^2-4x y+sqrt(3)y^2=0 is rotated about the...

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  8. Show that if two of the lines ax^3+bx^2y+cxy^2+dy^3=0 (a ne 0) make co...

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  9. If the pairs of straight lines ax^2+2hxy-ay^2=0 and bx^2+2gxy-by^2=0 b...

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  10. The equation a^2x^2+2h(a+b)x y+b^2y^2=0 and a x^2+2h x y+b y^2=0 repre...

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  11. If (x^(2))/(a) + (y^(2))/(b) + (2xy)/(h) =0 represent pair of straig...

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  12. If the lines represented by the equation ax^(2)+2hxy+by^(2)+2gx+2fy+c=...

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  13. The distance between the two lines represented by the  sides of an equ...

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  14. The equation of the image of the lines y=|x| in the line mirror x = 2 ...

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  15. If the equation 3x^(2)+xy-y^(2)-3x+6y+k=0 represents a pair of straigh...

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  16. The equation of second degree x^2+2sqrt2xy+2y^2+4x+4sqrt2y+1=0 represe...

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  17. The value of lambda for which the equation x^2-y^2 - x - lambda y - ...

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  18. Distance between the pair of lines represented by the equation x^(2)-6...

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  19. The equation x^2 - 3xy+ lambday^2 + 3x - 5y + 2 = 0 where lambda is a ...

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