Mastodawn

For pi day, i reminded myself that the integral of exp(-x²) between -/+ ∞ = √π

@kat
Here's another bonkers one for #piday ...
#maths #pi

@kat
And let's not forget the classic...
Thanks #Euler
#maths #pi #piday

@spacemagick @kat an important one:
Pi= 16arctan(1/5)-4arctan(1/239) (John Manchin) led to the most digits calculated by hand (over 500)

@spacemagick @kat In the same way that
1+2+3+… = -1/12
this is
1×2×3×… = √(2π)