2201.sagews

kronecker(-4,3)

-1

kronecker(-4,15)+0.

-1.0000000000000000000000000000000000000

kronecker(-4,4)

0

sum(m=0,2,kronecker(-4,2*m+1)/(2*m+1))

13/15

sum(m=1,5,kronecker(-4,m)/m)

13/15

kronecker(-4,1)

1

res1=sum(m=1,20000,kronecker(-4,m)/m) + 0.

0.78537316339751080961487959584370384469

Pi/4

0.78539816339744830961566084581987572105

h1=res1*4*2/(2*Pi)

0.99996816901146119840339745255122450246

res2=sum(m=1,50000,kronecker(-20,m)/m) + 0.

1.4049229462083852786200045300062138502

h2=res2*2*sqrt(-20)/(2*Pi)

1.9999430589968682718401184087787447529*I