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Last seen: nästan 3 år ago | Active since 2021

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What is the role of [] in ode?
Example1) [t x] = ode45(@fun, tspan, c0,...) I'm not sure what exactly is [t x] above. As I understand it, does ode represe...

nästan 3 år ago | 1 answer | 0

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answer

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Can you solve partial differential equations using ode?
As mentioned in the title, can you solve partial differential equations using the ode solver? If you can solve partial differen...

nästan 3 år ago | 1 answer | 0

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answer

Question

I wonder what the inside [] represents when using ode.
When using ode, I used the following format. [t C] = ode45(@Columnfun_ED_BFDM2_KH_0302,tspan,IC,opts,dz,column_Number,Nz,e,...

nästan 3 år ago | 1 answer | 0

1

answer

Question

I want to solve the integral.
I want to solve the integral. What you want to find here is the amount value. However, the CE value is a value that is pa...

nästan 3 år ago | 0 answers | 0

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Question

I don't know what's wrong with the function.
It is a function consisting of t, Q, and C. I was trying to express this in MATLAB. But a problem arose in expressing Q. But I d...

ungefär 3 år ago | 0 answers | 0

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Question

Are there two conditions at once when using the if condition?
Hello. I have a question and am posting. I solved it as below, but the value I want is not found, so I ask. Q_1 is entered only...

ungefär 3 år ago | 1 answer | 0

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Question

How do I set the 'RelTol','AbsTol'?
The following error occurs: WARNING: Failed at t=3.120501e+01. At time t, the integration tolerance can only be satisfied by re...

ungefär 3 år ago | 1 answer | 0

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answer

Question

The graph is connected with hold, but the graph is cut off.
It connects two graphs. However, the part connecting the two graphs is broken. I do not know why. (Figure 1 is an enlarged view...

ungefär 3 år ago | 0 answers | 0

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