Malia T.

asked • 03/07/14

math help college math homework math 101

you have 220 ft of fencing to enclose a rectangular plot that borders on a river. if you do not fence the side along the river, what is the largest area that can be enclosed?

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Anonymous answered • 03/07/14

Tutor
7f5ce20a 15a5 4b8a b22c 71a401be04c6

Parviz F.

Without calculus:
     for a<0
 f(X) = aX^2 +bx + c  = - ( X ±b/2a) ^2  - b^2 - 4ac     ( 1)
                                                                4a^2
 
                                       a positive quantity is subtracted, the maximum value of (1 ) is
                                         when the part which contains variable is 0.
                                          then   X = ± b/2a
 
  
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03/08/14

Anonymous answered • 03/07/14

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Anonymous answered • 03/07/14

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