| T O P I C R E V I E W |
| kalyani27 |
Posted - 07/26/2018 : 02:58:37 AM
Origin Ver. and Service Release (Select Help-->About Origin):
Operating System:
hai,
my equation to be fitting is
U(L,t)=T/T_m =1+2∑_(n=1)^∞▒〖〖(-1)〗^n 〖exp〗^((-t(〖nπ)〗^2)/t_c ) 〗
where u and t are my y and x values.
i tried to follow the procedure given in the posts
https://my.originlab.com/forum/topic.asp?TOPIC_ID=31355
and my coding is
const double n=100;
// Beginning of editable part
double bb = 0;
for(int ii =1; ii<=n; ii++)
{
if(floor(n)==ii)
bb = (1+2*(((-1)^n)*exp((-x/t)*(n*pi)^2)))+bb;
else
bb =(1+2*(((-1)^ii)*exp((-x/t)*(ii*pi)^2)))+bb;
}
y = bb;
dy_t= (((2*(-1)^n*(-(n*pi)^2*x)/t)*exp((-x/t)*(ii*pi)^2)))
by doubt is how to differentiate y wrt t, for large n values.
hope u guys can give some inputs
|
| 1 L A T E S T R E P L I E S (Newest First) |
| JacquelineHe |
Posted - 07/26/2018 : 03:59:57 AM
Hi,
If I do not misunderstand your means,
u is the Dependent Variable of the function, and t is the Independent Variables of the function.
So I am not sure why you use x and y in your function. x and y are the parameters?
Could you plesae show us more detail about the funcion information?
Thanks
Jacqueline
Originlab
|
|
|
