concerning serie representation of psi function.
In te solution of bessel function of the second kind we have the following expressions for the psi functions
psi(m+1) and psi(n+m+1) then they give the series for the two psi functions ie(or digamma function)
k from 1 to m of...
I have a problem with the computation of residues involve the gamma functions.
(see attached Pdf file)
Can you show me for the first residue with the arrows, or give a hint or a link.
Laplace transform using differential equations.(see attached PDF file)
My question d/ds(s^2 y- s Y(0)-Y'(0).).......
Now Y'= cos(sqrt(t)/2sqrt(t) Y'(0)=infinity
d/ds (Y'(0)=?? can it be treated as a constant or can we change limit and...
I have a little problem with the integrals of the following functions.
integral from 0to 2pi ∫sin^2(nθ+ψ)dθ=∫cos^2(nθ+ψ)dθ=pi
ψ=the phase angle.They occur in the theory of vibrations.
Is it appropriate to set ψ=0
Thanks to Uart for his help.I changed the program with your suggestions and it works fine.
Here is the program:!
! Numerical Mathematics and Computing, Fifth Edition
! Ward Cheney & David Kincaid
! Brooks/Cole Publ. Co.
! Copyright (c) 2003. All rights reserved.
Below is a fortran program to calculate the roots of an equation by newton's method.
I compile the program with the free compiler g95:
g95 -c newton.f95 then g95 newton.f95 -o newton.exe
When I run the program newton.exe I get the error can't assign value INTENT(IN)::x to...
I use scilab 5.2.2
Ik have a problem to find the zeros or roots of the bessel functions J0,J1...
Whel I write besselj(0,3) I get the value of the bessel function Jo(3)=0,2600520.
Can someone help me how to find the zeros of these bessel functions in scilab.
It's to satisfy the boundary conditions at 0 and pi.
solutions are u(x,y)=A exp(ny) + Bexp(-ny)
or =a sinh(ny)+bcosh(ny)
or =cosh(ny)+cosh n(y-pi) this satisfy thr BC at 0 and pi
The laplace equation is invariant under translation
problrm with complex integral.Consider the integral
use the branch 0<phi<3pi/2 and an idented contour at z=0 and z=1.(circular contour in the
upper half plane)
a)show that the integral can be written in terms of the integral...
I start to understand the structure of latex.Icreated my first latex file with an editor.
I runned latex on the tex file and I got dvi file.With preview I could see the text in ps or Pdf.
It was a downloaded example.
1)I run latex from from the prompt c:\ you click in...
use of latex
I have downloaded miktex 2.7(basic) and AMS latex.
They are both installed,but how I start the two programs,and write math.expressions.
I know maybe it is easy,but for me everything is new.
Thanks for your help
Use of "Latex"
I want to use Latex.I never heard about latex before.
If it runs on my computer:
1)Where can I download the files I need.
2)How to install
3)Where can I find the source code for writing the mathematical expressions.
What I really mean is:
you have a general equation of the second order in three variables and by translations
and rotations to remove Xy-Xz and yz terms you transform it to the canonical forms