Ordinary Differential Equations (ODEs)

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syms t y(t)
ysol=dsolve(' D2y + Dy + 4.25*y = 0','y(0)=2','Dy(0)=1');
y(t)=simplify(ysol)
ezplot(y(t),[0 10]);
xlabel('t');
ylabel('y(t)');
Based on the code block above, I get the following output.
But the output I want to get is as follows.
The formula is as above
I have to use ezplot. How can I get the 2nd output? Where am I making a mistake?

Accepted Answer

Star Strider
Star Strider on 20 Apr 2021
Change the ezplot call to fplot:
syms t y(t)
ysol=dsolve(' D2y + Dy + 4.25*y = 0','y(0)=2','Dy(0)=1');
Warning: Support of character vectors and strings will be removed in a future release. Use sym objects to define differential equations instead.
y(t)=simplify(ysol)
y(t) = 
fplot(y(t),[0 10]);
xlabel('t');
ylabel('y(t)');
grid
And note the Warning.
  4 Comments
Star Strider
Star Strider on 20 Apr 2021
My pleasure!
If my Answer helped you solve your problem, please Accept it!
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