kh2n

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14 years, 284 days
Glasgow, United Kingdom

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These are questions asked by kh2n

alpha:=1:dT:=Th-Tc:n:=1:

plot(subs(Tc=400,n*alpha*dT/2),Th=300..700);

All the units are in Kelvin but now I want to have Th on x-axis to be in Celsius.

Is this possible?

Thanks  
 

Hi,

 

Can i use method=laplace to solve an ode with no initial condition?

 

ode := diff(phi2(x),`$`(x,2))-Omega0*diff(phi2(x),x)-k*R1*E1/C*sigma*phi2(x)-l^2*phi2(x)+2*R*k/C*N2*exp(Omega0*(x-1))*cosh(l*(x-1))*l*C2/exp(-l) = 0;

bcs:=phi2(1)=0,phi2(S0)=-N4*Phi;

sol := dsolve({ode, bcs}, phi2(x), method=laplace);

 

Thanks

Hi,

How to solve this equation?

Any Idea?

Thx

1.778895759*Sigma-1831241.099/(76553.66445-.576e-5*Sigma^2)+6600.970252*Sigma/(76553.66445-.576e-5*Sigma^2)+.5739576533e-1*Sigma^2/(76553.66445-.576e-5*Sigma^2)+.4735119433e-4*exp(.7618258041e-2*Sigma)*Sigma^2/exp(.9051395693e-5*Sigma)/(76553.66445-.576e-5*Sigma^2)-39332.76308*exp(.7618258041e-2*Sigma)*(41.17+1/(1-exp(-160)))/exp(.9051395693e-5*Sigma)/(-69.17083220+Sigma)/(-69.17083220-Sigma)-629324.2088*exp(.7618258041e-2*Sigma...

Hi,

I am trying to plot this function Sigma(R30) but I get failed to do so. Any one would like to try to help me out?

The attached maple sheet contains the asymptotic solution of the huge equation in .txt file. 

thx.

 20110819_doodles2.mws

20110818_section4-5a.txt

hi

I want to have a fprint command which should given me the data in two columns.

I want to modifiy the following command

fprintf(fd,"%f \n",li,sigmai);

this command gives me data in horizental form, i.e.,

0.001000 0.300990 0.600980 0.900970 1.200960 1.500950 1.800940  2.100930
 
But i want it in the follwoing form
 li              sigma
0.001000 0.300990
 0.600980 0.900970
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