Hello everyone:

I'm trying to compare some functionality in Sage with that of Mathematica. 
For my assignment, I have to take this series:

sum((-1)^n*((x)^(2*n+1))/factorial(2*n+1),n,0,oo)


And put it into a mathematical software to see what function it is 
equivalent to. In this case, this series is supposed to be equivalent to 
the sine function. Indeed, when I put the following code in Mathematica, it 
says that it is the Sine function:
Sum((-1)^n*((x)^(2*n+1))/((2*n+1)!),{n,0,Infinity})

I was hoping that there would be something similar to this in Sage. I'm 
trying to symbolically use the sum function with the following code:

x = var("x")
n = var("n")
k = var("k")
show(sum(((-1)^n)*((x)^(2*n+1))/factorial(2*n+1),n,0,oo))

What it outputs is not the sine function. Instead, it says that it is 
equivalent to:

1/2*sqrt(2)*sqrt(pi)*sqrt(x)*bessel_J(1/2, x)


I don't know why exactly it says this but I was wondering if there was any 
way for Sage to do what Mathematica is doing here, in recognizing the 
popular series and outputting that when I try to symbolically evaluate this 
sum.

Thank you!
 



-- 
You received this message because you are subscribed to the Google Groups 
"sage-support" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-support+unsubscr...@googlegroups.com.
To post to this group, send email to sage-support@googlegroups.com.
Visit this group at https://groups.google.com/group/sage-support.
For more options, visit https://groups.google.com/d/optout.

Reply via email to