Engineering Calculus Notes 137

Engineering Calculus Notes 137 - 2 (2.10) which represents...

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2.1. CONIC SECTIONS 125 as the equation of the parabola with directrix x = p 4 and focus F ( p 4 , 0) . This is sketched in Figure 2.5 . F ( p 4 , 0 ) x = p 4 Figure 2.5: The Parabola y 2 = px , p > 0 By interchanging x and y and setting p = 1 /a , we get the more familiar equation y = ax
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Unformatted text preview: 2 (2.10) which represents a parabola with focus F (0 , 1 / 4 a ) and directrix y = 1 / 4 a . (Figure 2.6 ) F (0 , 1 / 4 a ) y = 1 / 4 a Figure 2.6: The Parabola y = ax 2 , a >...
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