I can't get the correct plot

Hello all,

I'm having trouble trying to reproduce my instructor plot, but I can't seem to get the right plot. This is what I have right now:

t=linspace(-2,2);

i_p=(-30/13)*cos(60*t)+(45/13)*sin(60*t)+(160/17)*cos(40*t)-(40/17)*sin(40*t);

plot(t,i_p)

grid on

title('LRC Steady-State')

xlabel('Time(t)')

ylabel('Current(i)')

And here is what I have for my plot:

And here is what my instructors plot looks like:

At this moment, I'm lost and can't seem to reproduce the plot. Any help would be great. Thanks in advance.

Answer 1

[Akira Agata]

This is due to the low sampling speed. Please try to use much higher sampling rate, like:

t=linspace(-2,2,2000);

[Jim Xiong]

That was simple. Thanks.