
π ≈ 3.14159265358979323846…
#Ramanujan’s Series (Very Advanced)
\frac{1}{\pi} = \frac{2\sqrt{2}}{9801} \sum_{k=0}^{\infty} \frac{(4k)! (1103 + 26390k)}{(k!)^4 396^{4k}}
INFINITE SERIES (LEIBNIZ FORMULA)
\frac{\pi}{4} = 1 - \frac{1}{3} + \frac{1}{5} - \frac{1}{7} + \frac{1}{9} - \cdots
#Euler’s Identity (Deep connection)
e^{i\pi} + 1 = 0









