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 Author Comment/Response Phil Lederer 03/24/08 3:41pm I am trying to do something basic--but I cannot figure it out I have some function in two variables f[x_,y_]= some arbitrary polynomial Now I want to minimize the function with respect to y over some compact interval with fixed x NMinimize[{f[x,y],y≥5,y≤9},y] I want to plot the y's versus the x's. I have tried many things like defining s[x_]=Part[NMinimize[{f[x,y],y≥5,y≤9},y],2] Plot[s[x],{x,-14, 46}] or variations Plot[tt/.s[x],{x,-14, 46}]. Many error messages or nothing at all results......... I am sure this is easy, and someone can suggest how to do this. However, one more thing would be greatly helpful (give a man a decent and readable Mathematica manual and he can feed himself...) I am baffled by what Mathematica wants when it comes to using a single part of a list and changing it to a scalar. Suppose as above q is a vector with a rule assigning a value to some variable x that is x- some number, and this assignment is in the third position of the list What is going on with q/.d[[3]] for example: Is q now a scalar? If not why not? Thanks for you help, Phil Lederer URL: ,

 Subject (listing for 'Evaluating a minimum and plotting solution') Author Date Posted Evaluating a minimum and plotting solution Phil Lederer 03/24/08 3:41pm Re: Evaluating a minimum and plotting solution yehuda ben-s... 03/28/08 12:54pm
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