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  18. 12-01-2015, 11:39 AM Top | #70
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    x-2)^2/8+(y+1)^2/16=1)


    a^2=16 and b^2=8

    the length of latus rectum =2b^2/a=4

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  21. 12-02-2015, 10:34 AM Top | #72
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    x2/7 + y2/16= 1
    a 2 =16....a=4 ,,,,, b2=7
    c2=16-7=9 ...... c=3
    e=c/a ......e=3/4 < 1
    ; 12-04-2015 09:51 PM


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