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haohaoxuexi1


Last seen: 4 days ago Active since 2021

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Frequency sweep for DAE question
%% close all; clear all; clc; format long; k1=25000; knl_1=300; knl_3=2000000; m=0.1; c=1; w0=20; kAmp = 0.5; ...

9 days ago | 0 answers | 0

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ODE45/ODE15 inquiry about nonlinear spring
Is there anyone can help me on how to get an ODE45/ODE15 program to solve the above equation? I want to get the value of y1 and...

14 days ago | 2 answers | 0

2

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How to input a "sym" type equation into ODE45 to solve first order differential equation?
% Sample close all; clear all; clc; syms t tt; a=1; b=2; c=3; fs_d=50*t^2+60*t^4+70*t^9; fd_d=diff(fs_d,t); dT...

3 months ago | 1 answer | 0

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How to check the symbolic engine of matlab2018?
I have intalled maple (maple toolbox as well) in my computer. And I am trying to switch the engine between in order to get bette...

4 months ago | 1 answer | 0

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