Write an Equation for the Ellipse $e = \frac { 9 } { 41 } ;$

question 125

Multiple Choice

Write an equation for the ellipse.
- $e = \frac { 9 } { 41 } ;$ foci at $( 9,0 ) , ( - 9,0 )$

• A) \(\frac { x ^ { 2 } } { 1600 } + \frac { y ^ { 2 } } { 1681 } = 1\)
• B) \(\frac { x ^ { 2 } } { 1681 } + \frac { y ^ { 2 } } { 1600 } = 1\)
• C) \(\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 1600 } = 1\)
• D) \(\frac { x ^ { 2 } } { 1600 } + \frac { y ^ { 2 } } { 81 } = 1\)

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Definitions:

Kinked-demand Curve Model

An economic model that suggests prices in an oligopoly are stable because firms will match price decreases but not price increases by competitors.

Marginal Revenue Curve

Represents the additional income gained from selling one more unit of a product or service, crucial for determining optimal production levels in microeconomics.

Marginal Cost

The boost in aggregate costs that comes from generating one extra unit of a product or service.