Write the standard form of the equation of the hyperbola with the given characteristics.
x24−y250=1
Given information:
Foci at (−3√6,0),(3√6,0) ,
Vertices at (−2,0),(2,0) .
Formula used:
- Standard form of equation of a hyperbola with foci (±c,0) and vertices (±a,0) on the x -axis is given by:
- Standard form of equation of a hyperbola with foci (0,±c) and vertices (0,±a) on the y -axis is given by:
- Focus of hyperbola with vertices as (±a,0) or (0,±a) and co- vertices (0,±b) or (±b,0) is found as:
x2a2−y2b2=1
y2a2−x2b2=1
c2=a2+b2
Calculation:
In order to write the standard form of the equation of the hyperbola with given foci (−3√6,0),(3√6,0) and vertices (−2,0),(2,0) first note that both foci and vertices are on x -axis equidistance from the center, so the transverse axis is horizontal and center is the origin.
Thus, the equation of the hyperbola will be of the form
x2a2−y2b2=1 , with vertices as (±a,0) and co- vertices (0,±b) .
Since, foci at 3√6 units i.e. c=3√6 and vertices at 2 units each i.e. a=2 , so calculate the co-vertices, using the formula
c2=a2+b2(3√6)2=(2)2+b29×6=4+b2b2=54−4b2=50b=√50b=5√2
Putting, a=2 and b=5√2 in the above form of hyperbola:
x222−y2(5√2)2=1x24−y225×2=1x24−y250=1
Thus, the standard form of the equation of hyperbola with given information is:
x24−y250=1
Chapter 8 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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