Problem

In Exercise, solve the given problems.The planet Pluto moves about the sun in an elliptica...

In Exercise, solve the given problems.

The planet Pluto moves about the sun in an elliptical orbit, with the sun at one focus. The closest that Pluto approaches the sun is 2.8 billion miles, and the farthest it gets from the sun is 4.6 billion miles. Find the eccentricity of Pluto’s orbit. (See Exercise 1.)

Exercise 1

In Exercise, solve the given problems.

The eccentricity e of an ellipse is defined as e = c/a. A cam in the shape of an ellipse can be described by the equation x2 + 9y2 = 81. Find the eccentricity of this elliptical cam.

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Solutions For Problems in Chapter 2.5