ode45 Initial conditions are not at the same point

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Yijia Liu
Yijia Liu 2018-11-24
回答： Pasindu Ranasinghe 2021-7-22
Hello everybody, I'm using ode45 to solve some easy differential equations.
Here are the equations that I have:
For now, I have the initial conditions:
As you can see, the initial conditions are in not the common case, which may look like:x(4)=a;y(4)=b;
The value of x and y gets from different point.
Any suggestion on the set of initial values for ode45?
Thank you in advance!
Meredith

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madhan ravi
madhan ravi 2018-11-24
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madhan ravi
madhan ravi 2018-11-28
Anytime :) if you find the answer helpful and it answered your query make sure to accept the answer

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Pasindu Ranasinghe
Pasindu Ranasinghe 2021-7-22
Example Code
Use ode45() to find the approximate values of the solution at t in the range of 1 to 3
function ydot = eqns(t,y)
ydot=(t-exp(-t))/(y+exp(y));
end
###################################
%%Code
[t1,y1]=ode45(@eqns,[1.5 1], 0.5);
hold on;
[t2,y2]=ode45(@eqns,[1.5 3], 0.5);
hold off
t=[t1;t2];
y=[y1;y2];
plot(t,y,'-o')
HOPE YOU FIND THIS USEFULL

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