Re: [sympy] summation for the sines of angles in A.P

2015-01-05 Thread Gaurav Dhingra
I think however in the case: when x==0 then the value of sin(n*x) == 0 for all value of n(n==1, 2, 3, ) so x==0 should not be in the case of taking limits of the function, rather its value should be zero(without limits). And i want to know that since "Sympy" can not solve bcz of not availab

[sympy] Sympy Gamma does not give result

2015-01-05 Thread Luv Agarwal
I tried to solve Eq: cos(x)+sin(x**2)=0 using SymPy Gamma and it gives no solution but when i do it by using solve function of SymPy in isympy it gives solution. What can be the problem? -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe

[sympy] How to Implement Functional Derivative?

2015-01-05 Thread yueming liu
According to the definition, we need the limit of the function when alpha approaches 0. How to implement this on a Function object? from sympy import * from sympy.abc import * from IPython.display import display init_printing(use_latex='mathjax') def func_diff(F, f, df): alpha = Symbol('alpha')

[sympy] How to Implement Functional Derivative?

2015-01-05 Thread yueming liu
Hi, I am trying to implement a general inverse problem solvers library by using sympy as an important part of the tool. One of a problem is that I need to compute functional derivative (http://en.wikipedia.org/wiki/Functional_derivative) against some functional. So far, I have tested this p

[sympy] transcendental equation solving

2015-01-05 Thread Luv Agarwal
While reading solvers doc I came across following: If solve returns [] or raises NotImplementedError, it doesn't mean that the equation has no solutions. It just means that it couldn't find any. Often this means that the solutions cannot be *represented symbolically*. For example, the equation

[sympy] Re: transcendental equation solving

2015-01-05 Thread Luv Agarwal
Also, it can sometimes be more useful to have a numeric solution than a solution represented in symbolic form. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+un

Re: [sympy] Re: transcendental equation solving

2015-01-05 Thread Sudhanshu Mishra
> Also, it can sometimes be more useful to have a numeric solution than a solution represented in symbolic form. And that's why we have libraries like scipy/numpy :) Regards Sudhanshu Mishra www.sudhanshumishra.in On Tue, Jan 6, 2015 at 4:20 AM, Luv Agarwal wrote: > Also, it can sometimes be m

Re: [sympy] Re: transcendental equation solving

2015-01-05 Thread Aaron Meurer
SymPy does have nsolve, which uses mpmath, but in general, numerical algorithms are not represented well in SymPy, and you're better off using other libraries if that's what you're interested in. Aaron Meurer On Mon, Jan 5, 2015 at 4:34 PM, Sudhanshu Mishra wrote: > > Also, it can sometimes be