nonlinear curve from data



On 29.06.2013 16:05, Adam wrote:
> I can make linear do it using linear function , but then curve is not
> smooth. I would like to use nonlinear function.
On 29.06.2013 16:05, Adam wrote:> I can make linear do it using linear 
function , but then curve is not
 > smooth. I would like to use nonlinear function.



At the end it should be :

I can do it using linear function , but then curve is not smooth. I 
would like to use nonlinear function.

TIA

Adam