Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

Solution 87666

Submitted on 10 May 2012

Incorrect

127Size
Leading solution size is 76.
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test
Code Input and Output
1
Fail
 
%%
% Rosenbrock's banana function
F=@(x) 100*(x(2)-x(1).^2).^2 + (1-x(1)).^2;
gradF=@(x) [100*(4*x(1).^3-4*x(1).*x(2))+2*x(1)-2; 100*(2*x(2)-2*x(1).^2)];
x0 = [-1.9; 2.0];
x1=[
   -1.4478
    2.1184];
x2=[
    1.7064
    2.9446];
f1=6.0419;
f2=0.6068;
[xmin,fmin]=SteepestDescent(F,gradF,x0,0.01,1)
assert(norm(xmin-x1)<0.2||norm(xmin-x2)<0.2)
assert( abs(fmin-f1)<0.5|| abs(fmin-f2)<0.5) % 2 local min
Error: License checkout failed.
License Manager Error -5
Cannot find a license for Optimization_Toolbox.
Make sure an INCREMENT line for Optimization_Toolbox exists in the license file, and that the formatting of the license file is correct.
Troubleshoot this issue by visiting:
<a href="http://www.mathworks.com/support/lme/R2012a/5">http://www.mathworks.com/support/lme/R2012a/5</a>
Diagnostic Information:
Feature: Optimization_Toolbox
License path: 13501@10.206.97.41:13501@10.10.207.33:/tmp/matlabpref/.matlab/R2012a_licenses:/opt/mlsedu/matlab/R2012a/licenses/license.dat:/opt/mlsedu/matlab/R2012a/licenses
Licensing error: -5,0.
2
Fail
 
%%
% Rosenbrock's banana function
F=@(x) 100*(x(2)-x(1).^2).^2 + (1-x(1)).^2;
gradF=@(x) [100*(4*x(1).^3-4*x(1).*x(2))+2*x(1)-2; 100*(2*x(2)-2*x(1).^2)];
x0 = [0; 0];
xcorrect=[1;1];
fcorrect=0;
[xmin,fmin]=SteepestDescent(F,gradF,x0) % 20 iterations default
assert(norm((xmin-xcorrect),inf)<1)
assert(abs(fmin-fcorrect)<0.8);
Error: License checkout failed.
License Manager Error -5
Cannot find a license for Optimization_Toolbox.
Make sure an INCREMENT line for Optimization_Toolbox exists in the license file, and that the formatting of the license file is correct.
Troubleshoot this issue by visiting:
<a href="http://www.mathworks.com/support/lme/R2012a/5">http://www.mathworks.com/support/lme/R2012a/5</a>
Diagnostic Information:
Feature: Optimization_Toolbox
License path: 13501@10.206.97.41:13501@10.10.207.33:/tmp/matlabpref/.matlab/R2012a_licenses:/opt/mlsedu/matlab/R2012a/licenses/license.dat:/opt/mlsedu/matlab/R2012a/licenses
Licensing error: -5,0.
3
Fail
 
%%
% Rosenbrock's banana function
F=@(x) 100*(x(2)-x(1).^2).^2 + (1-x(1)).^2;
gradF=@(x) [100*(4*x(1).^3-4*x(1).*x(2))+2*x(1)-2; 100*(2*x(2)-2*x(1).^2)];
x0 = [1.1; 0.9];
xcorrect=[1;1];
fcorrect=0;
[xmin,fmin]=SteepestDescent(F,gradF,x0,1e-2,2000)
assert(isequal(round(xmin),xcorrect))
assert(isequal(round(fmin),fcorrect))
Error: License checkout failed.
License Manager Error -5
Cannot find a license for Optimization_Toolbox.
Make sure an INCREMENT line for Optimization_Toolbox exists in the license file, and that the formatting of the license file is correct.
Troubleshoot this issue by visiting:
<a href="http://www.mathworks.com/support/lme/R2012a/5">http://www.mathworks.com/support/lme/R2012a/5</a>
Diagnostic Information:
Feature: Optimization_Toolbox
License path: 13501@10.206.97.41:13501@10.10.207.33:/tmp/matlabpref/.matlab/R2012a_licenses:/opt/mlsedu/matlab/R2012a/licenses/license.dat:/opt/mlsedu/matlab/R2012a/licenses
Licensing error: -5,0.