Hi,

I want to plot the following transient by means of an edxcel spreadsheet, where:-

\( i(t) = 5e^{-3t}\sin(\omega t) \) and \( \omega = 1\ r/s \)

Now, I've plotted it using a time interval of up to 3 seconds and it looks nothing like what it should do?

I think it's down to the sine function operating on time only as an argument, what can I do about this?

I've made an attempt to post a picture on what it should like, but it says "invalid file."

 

Hi,

I want to plot the following transient by means of an edxcel spreadsheet, where:-

\( i(t) = 5e^{-3t}\sin(\omega t) \) and \( \omega = 1\ r/s \)

Now, I've plotted it using a time interval of up to 3 seconds and it looks nothing like what it should do?

I think it's down to the sine function operating on time only as an argument, what can I do about this?

I've made an attempt to post a picture on what it should like, but it says "invalid file."

Well, you have two things going on here. You have a very low frequency sine wave (1 rad/s = 159 mHz) that is being tacked onto a very quickly decaying exponential function which dictates the shape of the curve.

Make sure you to have enough data points to show the curve.

 

It's ok, false alarm. The coefficient of 'e' was 0.5 not 5