Mariusz Iwaniuk

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These are questions asked by Mariusz Iwaniuk

Hi guys,

I can not convert a series with label.

 

If anyone can confirm this?

Maybe-Bug.mw

 

 

A strange verical line in output of dsolve.Should be a comma in Jacobi SN function and comma's in invert Jacobi SN function.

 

Possible_Bug.mw

Can anyone help me confirm this?

Hi all,

I have been trying to plot Riemann Zeta Function on certain range, but it takes a lot of time(several minutes ,maybe hours).These are the basic things.

How to speed up ploting Zeta?

The same problem with Optimization.

Zeta-Problems.mw

Mathematica don't have this such problems.

Mathematica ploting Zeta with 0.125 second and optimizing 3.42 second.Maple few hours maybe......

 

 

 

Hi everyone.

I'm trying to solve the following PDE

 

but I'm getting this error:

Error, (in pdsolve/numeric/process_IBCs) initial/boundary conditions can only contain derivatives which are normal to the boundary, got (D[1, 1](w))(x, 0)

The PDE represents the bending of a thin plate.

See File:

PDE-Problem.mw

Hi every body.

I want to solve a differential equation:

ode=D(r(θ),θ).....

I have the initial conditions:

e=10^(-20)

r(e)=A where A is parameter.
r'(e)=0

sol:=dsolve({ode,r(e)=A,D(r)(e)=0},parameter=[A],numeric)

and:

All in the file.

#@#

Ode-Problem.mw

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