Writing assignment 3

Writing assignment 3 - Writing assignment #3 Scott B....

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Writing assignment #3 Scott B. Roberts Math 151 There are three different types of conic sections that we examined in class. They include the parabola, ellipse, and the hyperbola. Conics are curves that are formed by intersecting a cone with a plane. The conic section we end up with is dependant upon the degree that the plane intersects the cone. All of the conic sections we saw in class are derived from the same general quadratic equation: Ax 2 + Bxy + Cy 2 + Dx + Ey + F=0 The determinant of the equation is B 2 - 4 AC . Assuming a conic is not degenerate, the following conditions hold true: If B 2 -4 AC > 0, the conic is a hyperbola. If B 2 -4 AC < 0, the conic is a circle, or an ellipse. If B 2 - 4 AC = 0, the conic is a parabola A parabola is the set of all points (x,y) that are the same distance from a fixed line (called the directrix) and a fixed point (called the focus). It takes the shape that is similar to the letter U. Parabola== (
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This note was uploaded on 09/20/2008 for the course MATH 151 taught by Professor Bray during the Spring '07 term at Mesa CC.

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Writing assignment 3 - Writing assignment #3 Scott B....

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