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Zixuan Li


Active since 2019

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Question


why there is a small error in these simple calculations?
3e-4-3*10^-4 sum=0; for i=1:1000 sum=sum+0.001; end sum_output=sum this gives an answer of -5.4210108...

5 years ago | 1 answer | 0

1

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Question


why my adaptive RK4 code cannot be as efficient as ode45?
I wrote a code of adaptive RK4 method, the tolerance can be changed, and the idea is based on wikipedia (compare the difference ...

5 years ago | 1 answer | 0

1

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Question


what's the difference in accuracy between solving a stiff problem by ode15s and ode45?
It seems ode45 can also solve a stiff problem, but takes more time ( there are more data on finer grid as well, but the curve is...

5 years ago | 2 answers | 0

2

answers