Thursday, June 13, 2013

College Algebra, Chapter 8, Review Exercises, Section Review Exercises, Problem 18

Determine the center, vertices, foci and asymptotres of the hyperbola x249y232=1. Then, sketch its graph

The hyperbola has the form x2a2y2b2=1 with center at origin and horizontal transverse axis since the denominator
of x2 is positive. This gives a2=49 and b2=32, so a=7,b=42 and c=a2+b2=49+32=9
Then, the following are determined as

center (h,k)(0,0)vertices (±a,0)(±7,0)foci (±c,0)(±9,0)asymptote y=±baxy=±427x

Therefore, the graph is

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