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4th Edition

James Stewart

Publisher: Cengage Learning

ISBN: 9781337687805

Chapter B, Problem 47E

To determine

**To calculate: **To show that the for a parabola,

Expert Solution

It is proved that

**Given information: **

**Formula Used:**

Parabola is a set of points in the plane that are equidistant from a fixed point

**Calculation:**

Consider parabola with focus

Let

Distance between the point and focus is

Let us assume that thedistance between the point and directrix

Now, the definition of parabola,

Thus,

**Conclusion:**

Hence, proved that