Recent content by Petar Mali

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    Fortran Fortran: mistake in writting this formulas

    I'll try to print code and look for unbalanced brackets, but that looks just fine for me. I put symbol & in the end of some problematic lines and that didn't work neither. And in program I get just one mistake and that mistake is syntax one. Program worked just fine with different shape of...
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    Fortran Fortran: mistake in writting this formulas

    Fortran says to me that I made syntax error here V1=(Kps*(1-ra**2)*(1-cos(6.2831853*y(1))))/(6.2831853**2* (1+ra**2+2*ra* cos(6.2831853*y(1)/2))**2)
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    Fortran Fortran: mistake in writting this formulas

    Do I made a mistake in writting this formulas. I don't see them. Tnx for your answer. V1=(Kps*(1-ra**2)*(1-cos(6.2831853*y(1))))/(6.2831853**2* (1+ra**2+2*ra* cos(6.2831853*y(1)/2))**2) V2=(Kps*ra*(1-ra**2)*(1-cos(6.2831853*y(1)))*...
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    Fortran Why is My Fortran Code Not Working?

    I'm new in programing. Does enybody knows why this don't work. implicit none integer i,N,Ntot,istag real*8 t,U,tpin,k,eg,mstag real*8 rho,Umstag,Urho real*8 eaf,eaftot,lambdaminus write(6,*) 'N,Ntot,t,U' read (5,*) N,Ntot,t,U write(36,*) Ntot/2+1 tpin=8.d0*datan(1.do)/dfloat(N)...
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    Phase transitions between solid and liquid. Critical point CP

    Look at a simple single - component system. And PT diagram for this system. Suppose that supstance we looking at has three phases solid, liquid and gas. In that case we have critical point between liquid and gas phase, but not between solid and liquid phase. Why? Why solid - liquid coexistence...
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    Sun Particles and Radioactive Decay

    Is this text relevant? http://www.naturalnews.com/033101_sun_particles_radioactive_decay.html
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    Elementary Problem: What Strength is Needed to Lift Mass m to Height h?

    Homework Statement What strenght do you need to put mass m in the height h? Homework Equations P=\frac{A}{t} The Attempt at a Solution A=mgh so P=\frac{mgh}{t} Is that mean that your strenght is less if you take mass long in the height h?
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    Representing a Function as Laurent Series: Example

    Ok just tell me \frac{1}{e^x-x-1}=... what you have done before you put \frac{2}{x^2}?
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    Application of complex analysis to real integrals

    If I remember well this integral is from Stefan - Boltzman law. It's value is \frac{\pi^4}{15}. Put e^x in form of the series, use some approximation and you must in the and get Riman zeta function.
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    Representing a Function as Laurent Series: Example

    I understand what you trying to tell me. But \frac{2}{x^2}-\frac{2}{3 x}+\frac{1}{18}+\frac{x}{270}-\frac{x^2}{3240}-\frac{x^3}{13608}-\frac{x^4}{2041200}+\frac{x^5}{874800}+\frac{13 x^6}{146966400}-\frac{307 x^7}{24249456000}-\frac{479 x^8}{203695430400}+O[x]^9...
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    Representing a Function as Laurent Series: Example

    Listen to me. I have just this\frac{1}{e^x-x-1}
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    Representing a Function as Laurent Series: Example

    Ok. I will get \frac{2}{x^2}\sum^{\infty}_{n=0}(-1)^n(\frac{x}{3}+\frac{x^2}{12}+...)^n But I don't have this form \frac{2}{x^2}-\frac{2}{3 x}+\frac{1}{18}+\frac{x}{270}-\frac{x^2}{3240}-\frac{x^3}{13608}-\frac{x^4}{2041200}+\frac{x^5}{874800}+\frac{13...
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    Representing a Function as Laurent Series: Example

    Homework Statement How to represent function \frac{1}{e^x-x-1} in form of Laurent series around point 0 Homework Equations Laurent series f(z)=\sum^{\infty}_{n=-\infty}a_n(z-z_0)^n Here is z_0=0 The Attempt at a Solution Computer gives \frac{2}{x^2}-\frac{2}{3...
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