What's the problem?

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Augusto Borges Resende
编辑： Walter Roberson 2019-11-2
I do not know what the code problem is for not plotting:
t=-50:1:50; y=(t.^2+9)/(t-3.^2); plot(t,y,'-k');

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Image Analyst
Image Analyst 2017-10-13
编辑：Image Analyst 2017-10-13
You forgot to use dot slash to do an element by element divide:
t = -50 : 1 : 50;
y = (t.^2 + 9) ./ (t-3^2);
plot(t, y, 'k-', 'LineWidth', 2);
grid on;
xlabel('X', 'FontSize', 20);
ylabel('Y', 'FontSize', 20);
The above code works fine.

更多回答（1 个）

Jonathan Chin
Jonathan Chin 2017-10-13
I assume you wanted to do an element divide see small below
t=-50:1:50;
y=(t.^2+9)./(t-3.^2);
plot(t,y,'-k');

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