Graphing using linspace command

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MGH
MGH 2018-1-30
回答： Star Strider 2018-1-30
I am trying to graph the function y = t^2 * exp(-t/2) * sin(4*t) where t is user input. I do not need help making a graph, but I cannot get y to be a matrix. Please advise.

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Star Strider
Star Strider 2018-1-30
I would do something like this:
endtc = inputdlg('Maximum time for the simulation ');
endt = str2double(endtc{:});
t = linspace(0, endt, endt*10);
y = t.^2 .* exp(-t/2) .* sin(4*t); % Use Element-Wise Operations
Experiment to get the result you want.

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