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Old   February 1, 2005, 12:10
Default Minimization problem
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Doche
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Hi, everybody I've a real problem with some of Numerical Recipes routines in f77. I'm trying to isolate the minimum of a quadratic multidimensional equation (i.e. (x+2)^2+(y+2)^2+3) which will the most simple case with the Conjugate Gradient Method. I use the routine mnbrak dbrent and dlinmin that you can easily find on the Numerical recipes home page. (If your are interested, I can send you the source files of "my" code). The problem is the dependancy of the solution ( i.e. the location of minimum ) to the INITIAL GUESS. If anybody have used those routines...
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Old   February 2, 2005, 05:23
Default Re: Minimization problem
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?!
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for f(x,y)= (x+2)^2+(y+2)^2+3) the minimum is f(-2,-2)=3
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Old   February 2, 2005, 05:25
Default Re: Minimization problem
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Doche
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HA............ Good Job............
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Old   February 2, 2005, 12:01
Default Re: Minimization problem
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Guillaume
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That is normal, to a certain extend, with non-linear optimization
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