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January 30th, 2013, 10:24 PM   #1
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find minimum

x,y>0 and 9x+4y=2005


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January 31st, 2013, 08:13 AM   #2
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Re: find minimum

[attachment=0:6ffsblz9]minimum.jpg[/attachment:6ffsblz9]
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January 31st, 2013, 08:42 AM   #3
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Re: find minimum

335/26866 if x and y are integers; x=133 and y=202
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February 3rd, 2013, 12:07 AM   #4
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For the exact answer, (x, y) = (401/3, 401/2).
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February 3rd, 2013, 05:51 AM   #5
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Re: find minimum



find the derivatives of g(y)=g'(y)

let g'(y)=0

we get :



(10y-2005)(2y+2005)=0



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