Q. A hyperbola centered at the origin has vertices at (±7,0) and foci at (±27,0).Write the equation of this hyperbola.
Hyperbola Equation: The standard form of the equation of a hyperbola centered at the origin with horizontal transverse axis is (x2/a2)−(y2/b2)=1, where 2a is the distance between the vertices and 2c is the distance between the foci. We are given the vertices at (±7,0), which means a=7. We are also given the foci at (±27,0), which means c=27.
Finding Value of b: We need to find the value of b. The relationship between a, b, and c in a hyperbola is c2=a2+b2. We already know that a=7 and c=27. Let's plug these values into the equation to find b2.c2=a2+b2(27)2=(7)2+b2a0a1a2
Writing Hyperbola Equation: Now that we have b2=20, we can write the equation of the hyperbola. The equation is (a2x2)−(b2y2)=1. Substituting a2=7 and b2=20 into the equation, we get:(7x2)−(20y2)=1
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