spalinowy

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8 years, 148 days

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These are questions asked by spalinowy

Hello everyone!
Can you help me with my problem?
How can I automatically paste parts of denominator from one equations to another? Now I must do this manualy. Example of my problem is in file2.

File_2.mw

Hello!

I need help, because I can't find solution.
How can I export data from Bode Plot to Excel? Two below solutions don't work.

 

with(DynamicSystems);

T2 := TransferFunction((1.224867518*10^(-7)*s+2.259345677*10^(-6))/(s^2+11.83692270*s+238.3951363)):

BP2 := BodePlot(T2);

with(ExcelTools);
ExcelTools:-Export(op([1, 1], BP2));

Export(BP2, "Employees13.xls", "Payroll1", "B2");
 

File_1.mw

Hello,

how to calculate the laplace transform for the following equations?

L1:=laplace(psi1(t)*(diff(z1(t), t)), t, s):
L2:=laplace((diff(psi1(t), t))^2, t, s):

 

Hello everyone!

how to solve system of 5 equations like as in attachment, but much more faster?

I tried to do this on my computer (CPU 8 Core 3,4 GHz, RAM DDR3 2x8 GB, SSD) but after 12 hour my computer doesn't respond.

What I can do if I don't have a supercomputer?

Forum.mw

 

How to linearize this equation by Taylor function?

sin(phi2)*sin(psi1(t))*lk*m1*(diff(psi1(t), t, t))+sin(phi2)*(diff(psi1(t), t))^2*cos(psi1(t))*lk*m1

or otherwise written:

sin(phi2)*sin(psi1(t))*lk*m1*(diff(psi1(t), t, t))+sin(phi2)*(diff(psi1(t), t))^2*cos(psi1(t))*lk*m1

Some one can help me?

 

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