180 Reputation

18 years, 62 days

what is the easiest way to find a row in...

Maple 2023

This is probably a dummy question. I have a matrix (3 columns, 4 rows). I would like to extract the rows in which the value in the third column matches "2". As long as one has a matrix of 2 columns, this can be easily done by using the Lookup command but it does not allow you to give the row values of multiple columns. Is there another command that allows you to do that?

FindRowInMatrix.mw

How to solve ODE reptitive...

Maple 2023

Dear power users, I am still struggling with relative simple tasks and do hope that some of you can help me in the right direction. Solving an ODE is straightforward in Maple. But how do you solve an ODE with multiple inputs, as shown in the attached worksheet. I would appreciate any help with respect to my question. I would also like to wish all of you a good ending of 2023 and a brilliant start in 2024.

MapleprimesODE_Question.mw

Why can I not plot the units...

Maple 2023

This is probably a real dummy question. Why can I not plot the units in this worksheet? Thanks in advance for your help PlotUnit.mw

Why does this worksheet calculates for e...

Maple 2023

Dear Power Users, I tried to make a model in Maple but after several hours of struggling I need some help. Can someone tell me what I did wrong or explain to me what is the meaning of the maplemint comment on procedure (optimalisatie)? Thank you in advance.

Is it possible to evaluate Python code i...

Maple 2022

I was wondering whether it is possible to execute Python code into Maple. As an example, I give a fairly simple code:

Concentration_calculation(C_0, Q, V_r, m_b, rho, R, Gamma_i, delta_t=1):
t = np.arange(0, 360*60, delta_t)
C_i = [C_0]
for i in range(len(t)-1):
dC = -(Q/V_r)*(1-math.exp(-3*m_b*math.sqrt(Gamma_i/(rho*t[i+1]))/(math.sqrt(math.pi)*Q*R)))*C_i[i]
C_i.append(C_i[i] + dC*delta_t)
return t, C_i

Any help in tis respect would be highly appreciated.

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