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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: solve it
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[Post New]15 Jun 2008 13:29:12 IST
    Subject: solve it
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Xavier4 (4)

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Calculate the value of y'' if x3-2x2y2+5x+y-5=0 and y=1 at x=1
    
[Post New]15 Jun 2008 13:40:42 IST
    Subject: Re:solve it
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allamraju (3422)

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Simple one,Diff. on both sides w.r.t x,we have,


3x2-4xy2-4x2yy'+5+y'=0


4-3y'=0y'=4/3 at x=1,y=1.


Now,6x-4y2-8xyy'-8xyy'-4x2yy"-4x2(y')2+y"=0


6-4-16y'-3y"-4(y')2=0


2-64/3-64/9=3y"


2-256/9=3y"


y"=-238/27.
MAKING A MISTAKE IS HUMAN BUT REPEATING IT IS IDIOTIC.
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