The graph wont be appear

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NEIL Alfred
NEIL Alfred 2022-1-21
回答： Rik 2022-1-21
I keep getting this error
Error using *
Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the
number of rows in the second matrix. To perform elementwise multiplication, use '.*'.
Error in un (line 3)
y= t.^2 * cos(t);

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回答（1 个）

Rik
Rik 2022-1-21
Do what the error message tells you to do:
y= t.^2 .* cos(t);

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