How to plot this exponential signal?

I keep getting an error when I try to run this section of code in Matlab for signal generation.

x=exp(-0.1*t)*sin(0.6*t);

It says "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 '.*'."

Please help as this is for a lab. Thank you!

Answer 1

[Star Strider]

The error message is spot on!

Use element-wise multiplication ...

x=exp(-0.1*t)*sin(0.6*t);

↑ ← HERE

so with that correction ....

x=exp(-0.1*t).*sin(0.6*t);

it should work correctly.

See Array vs. Matrix Operations for an extended discussion.

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