Parham2016

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These are questions asked by Parham2016

 

Hi all,

How can I solve this Integral? 

I do want to learn how could I solve numerically the attached integral. As you can see through the file, there is written one method, however, it is not able to solve the integral.

 
 

Download Integral.mwIntegral.mw
 

Download Integral.mwIntegral.mw

 

 

 

Hello everybody,

 

I want to solve this pde.the desire solution is V(r,z). three boundar conditions are written that two of them are related to rhe radial and one is related to the longitudinal coordinate.

I attached the solution for you. but this solution is derived by Matlab. Now, I just want to resolve it by Maple, but I couldn't reach it. Please let me know the correct way asap.

 

Thanks a lot.PDE.mw
 

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NULL

restart 

Q := diff(V(r, z), r, r)+(diff(V(r, z), r))/r-V(r, z)/r^2+diff(V(r, z), z, z)+C/r = 0

diff(diff(V(r, z), r), r)+(diff(V(r, z), r))/r-V(r, z)/r^2+diff(diff(V(r, z), z), z)+C/r = 0

(1)

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NULL

pdsolve(Q)

PDESolStruc(V(r, z) = _F1(r)*_F2(z)-(1/2)*(_C1/r+_C2*r+_C3*r*ln(r))*C/_C3, [{diff(diff(_F1(r), r), r) = _F1(r)*_c[1]+(-(diff(_F1(r), r))*r+_F1(r))/r^2, diff(diff(_F2(z), z), z) = -_F2(z)*_c[1]}])

(2)

NULL

 

NULL

NULL

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Download PDE.mwPDE.mw

 

 

 

Hello all. Is there any solution for the indefinite integralBadIntegral.mw

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int((B*alpha[1]+(1/8)*`Νu`)*HeunT((1/16)*alpha[1]*(8*B*alpha[1]+`Νu`)*3^(2/3)*(2*alpha[2]+1)^2/(alpha[2]*(alpha[1]*alpha[2]*(8*B*alpha[1]+`Νu`))^(1/3)), 0, (1/2)*alpha[1]*(8*B*alpha[1]+`Νu`)*3^(1/3)/(alpha[1]*alpha[2]*(8*B*alpha[1]+`Νu`))^(2/3), (1/3)*3^(2/3)*(alpha[1]*alpha[2]*(8*B*alpha[1]+`Νu`))^(1/6)*y), y)

int((B*alpha[1]+(1/8)*`Νu`)*HeunT((1/16)*alpha[1]*(8*B*alpha[1]+`Νu`)*3^(2/3)*(2*alpha[2]+1)^2/(alpha[2]*(alpha[1]*alpha[2]*(8*B*alpha[1]+`Νu`))^(1/3)), 0, (1/2)*alpha[1]*(8*B*alpha[1]+`Νu`)*3^(1/3)/(alpha[1]*alpha[2]*(8*B*alpha[1]+`Νu`))^(2/3), (1/3)*3^(2/3)*(alpha[1]*alpha[2]*(8*B*alpha[1]+`Νu`))^(1/6)*y), y)

(1)

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Download BadIntegral.mw

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Thanks

 

Hello all,

 

Is here anyone who could help me with this Integral.

I want to determine P(y=2) in which the Nu is a constant and also is unknown.

In deed I want to derive the P which only has one unknown parameter(Nu). But I cannot solve this indefinite integral although the \alpha_1 , \alpha_2 and B are known constants. The Nu parameter mustn't be valued preferely.Indefinite_INtegral.mw

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