# Differential equation and problem with minmax

조회 수: 1(최근 30일)
Melda Harlova 2020년 1월 6일
편집: Philippe Lebel 2020년 1월 6일
Hi everyone,
I have an error in that line:
net=newff(minmax(p),[3,1],{'tansig','purelin'},'trainlm')
And this error 'minmax' requires Deep Learning Toolbox.
Can someone help me? Thanks!
clear all
k=1; n=length(x);
for i=1:n
for j=1:n
z(i,j)=u(i,j);
p(1,k)=x(i);
p(2,k)=y(j);
t(k)=z(i,j);
k=k+1;
end
end
figure(1), mesh(x,y,z);
net=newff(minmax(p),[3,1],{'tansig','purelin'},'trainlm');
net.trainParam.epochs=100;
net=train(net,p,t);
for i=1:n
for j=1:n
y(i,j)=sim(net,[x(i);y(j)]);
end
end
figure(2),mesh(x1,x2,y)
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Melda Harlova 2020년 1월 6일

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### 답변(1개)

Philippe Lebel 2020년 1월 6일
편집: Philippe Lebel 2020년 1월 6일
This error message tells you that you don't have the required package installed in order to use the minmax() function.
Matlab comes with a lot of functions. But for some speciallized topics there are packages (or expensions) you can buy in order to enhance matlab's capabilities. Minmax() seems to be one of those specialized functions that are part of the Deep Learning toolbox package.

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