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24 March, 01:15

What is the focus of the parabola

(y-3) ^2=8 (x-5) ?

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  1. 24 March, 01:42
    0
    Hello,

    Let's suppose y'=y-3

    and x'=x-5

    Parabola become y'²=8x' whose focus is (8/4,0) = (2,0)

    y=y'+3==>y=0+3=3

    x=x'+5==>x=2+5=7

    Focus is (7,3)

    Rem for parabola y²=kx focus is (k/4,0)
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