MathGroup Archive 2005

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Re: Area Under Curve (Min Length Interval)


Proof with Mathematica that your approach was the right one:

Minimize (b-a) under the constraint F[b]-F[a] == c

In[1]:= lagrangian = (b-a) + lambda(F[b] - F[a] - c);

In[2]:= Eliminate[D[lagrangian,a] == 0 && D[lagrangian,b] == 0, lambda]

Out[2]= F'[b] == F'[a]


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