Question

question 1 of 10 which of the following expressions represents the eccentricity of an ellipse? a. $\frac{a}{c}$ b. $\frac{b}{a}$ c. $\frac{a}{b}$ d. none of the above are correct.

Explanation:

Step1: Recall eccentricity formula

The eccentricity $e$ of an ellipse is given by the formula $e=\frac{c}{a}$, where $c$ is the distance from the center of the ellipse to a focus and $a$ is the semi - major axis length. None of the given options A ($\frac{a}{c}$), B ($\frac{b}{a}$), C ($\frac{a}{b}$) match the correct formula for the eccentricity of an ellipse.

Answer:

D. None of the above are correct.