Question

 

Find the equation of the hyperbola whose asymptotes are x + 2y + 3 = 0 and 3x + 4y + 5 = 0 and which passes through the point

(1,–1 ). Find also the equation of the conjugate of the conjugate hyperbola.

Solution

Correct option is

 

Combined equation of asymptotes is  

       

  

Also we know that the equation of the hyperbola differs from that of asymptotes by a constant. 

Let the equation of the hyperbola be   

            

Since it passes through (1, –1) then 

     

From (ii), equation of hyperbola is  

        

But we know that equation of conjugate hyperbola  

 = 2(Combined equation of asymptotes) – (Equation of hyperbola)   

                                               

SIMILAR QUESTIONS

Q1

Find the locus of the foot of perpendicular from the centre upon any normal to the hyperbola .

Q2

Find the locus of the mid-points of the chords of the hyperbola  which subtend a right angle at the origin.

Q3

Find the locus of the poles of normal chords of the hyperbola 

Q4

Find the condition for the lines Ax2 + 2Hxy + By2 = 0 to be conjugate diameters of  .

Q5

Find the asymptotes of the hyperbola xy – 3y – 2x = 0.

Q6

A ray emanating from the point (5, 0) is incident on the hyperbola 9x2 – 16y2 = 144 at the point P with abscissa 8. Find the equation of the reflected ray after first reflection and point P lies in first quadrant.  

Q7

The equations of the transverse and conjugate axes of a hyperbola are respectively 3x + 4y – 7 = 0, 4x – 3y + 8 = 0 and their respective lengths are 4 and 6. Find the equation of the hyperbola.  

Q8

 

ABC are three points on the rectangular hyperbola xy = c2, find

1. The area of the triangle ABC

2. The area of the triangle formed by the tangents at AB and C

Q9

Find the coordinates of the foci and the equation of the directrices of the rectangular hyperbola xy = c2.

Q10

 

The vertices of the hyperbola