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Saha

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How to Solve Error, (in dsolve/numeric/b...

Saha 70 Maple 18
February 11 2023
1 0

Please Help,

I am trying to plot some movement equations, but the following error keeps happening:

Error, (in dsolve/numeric/process_input) system must be entered as a set/list of expressions/equations

when I tryed to rewrite the equation the error became:

Can someone help me with those errors?

Here is the code

pp.mw

How to Plot this ?...

Saha 70 Maple 18
ode homework dsolve
January 31 2023
1 0

Please Help!  The flow gets me like this,Where should i fix this problem.The flow changes for me fluctuate through the series range.What to do to get upflow in f(eta) and downflow in theta(eta)

 MVP.mw

Problem with solving Pade approximant al...

Saha 70 Maple 18
plotting mtm incomplete-question
January 04 2023
1 0

 How to rectify the Error, (in MTM:-findsym) invalid input: a string/name list is expected for sort method `lexorder`   .Could you please help me to plot the curve.

TC1.mw

How to do this?...

Saha 70 Maple 18
plotting
December 27 2022
1 1

SS.mw

How to rectify this error,I want a downfall curve ,Please help.

How to get theta(2),theta(3),...?...

Saha 70 Maple 18
syntax homework user-error
December 22 2022
2 3

Thermal_Stress_Distribution.mw

Could you please help me to rectify this error.
> 

restart
> 

with(PDEtools):
> 

"Theta[0]:=1:Theta[1]:=Gamma:delta(0):=1:for w from 1 to 30 do delta(w):=0;od:delta(-1):=0:beta:=2:N[cc]:=1:N[rc]:=0.5:Q[int]:=0.2:gamma:=0.3:Mu:=0.5:Theta[a]:=0.2: "

Error, attempting to assign to `gamma` which is protected.  Try declaring `local gamma`; see ?protect for details.

  
> 

> 

for k from 0 to 8 do Theta(v+2) := solve(sum(delta[w-1]*(v-w+1)*(v-w+2)*Theta[v-w+2], w = 0 .. v)-Q[int]*gamma*Theta[a]*delta[v]-Q[int]*gamma*delta[v-1]*Theta[a]+M*Theta[a]*delta[v]/(1-Theta[a])+M*Theta[a]*delta[v-1]/(1-Theta[a])-M*(sum(delta[w-1]*Theta[v-w], w = 0 .. v))/(1-Theta[a])-M*Theta[v]/(1-Theta[a])+N[rc]*Theta[a]^4*delta[v-1]+Q[int]*gamma*(sum(delta[w-1]*Theta[v-w], w = 0 .. v))+Q[int]*gamma*delta[v]+N[cc]*Theta[a]*delta[v-1]+N[rc]*Theta[a]^4*delta[v]+N[cc]*Theta[a]*delta[v]+(v+1)*(v+2)*Theta[v+2]+Q[int]*delta[v-1]+Q[int]*delta[v]-N[rc]*(sum(sum(sum(sum(delta[l-1]*Theta[w-l]*Theta[Zeta-w]*Theta[w-Zeta]*Theta[v-w], l = 0 .. w), w = 0 .. Zeta), Zeta = 0 .. w), w = 0 .. v))-N[rc]*(sum(sum(sum(Theta[w]*Theta[Zeta-w]*Theta[w-Zeta]*Theta[v-w], w = 0 .. Zeta), Zeta = 0 .. w), w = 0 .. v))-N[cc]*(sum(delta[w-1]*Theta[v-w], w = 0 .. v))+beta*(sum(sum(delta[Zeta-1]*(w-Zeta+1)*Theta[w-Zeta+1]*(v-w+1)*Theta[v-w+1], Zeta = 0 .. w), w = 0 .. v))-N[cc]*Theta[v]+beta*(sum(Theta[v-w]*(w+1)*Theta[w+1], w = 0 .. v))+(v+1)*Theta[v+1]+beta*(sum((v-w+1)*Theta[v-w+1]*(w+1)*Theta[w+1], w = 0 .. v))+beta*(sum(Theta[v-w]*(w+1)(w+2)*Theta[w+2], w = 0 .. v))+beta*(sum(sum(delta[Zeta-1]*Theta[w-m]*(v-w+1)*(v-w+2)*Theta[v-w+2], Zeta = 0 .. w), w = 0 .. v)), Theta(v+2)) end do

Error, invalid left hand side in assignment

  
> 

``

Download Thermal_Stress_Distribution.mw

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