E=MC2E = MC^2E=MC2
xn+yn=znx^n + y^n = z^nxn+yn=zn
S={z∈C ∣ ∣z∣<1}andS2=∂SS = \{ z \in \mathbb{C}\, |\, |z| < 1 \} \quad \textrm{and} \quad S_2=\partial{S}S={z∈C∣∣z∣<1}andS2=∂S
P(X≤2)amp;=P(X=0)+P(X=1)+P(X=2)amp;=e−2+2⋅e−21!+22⋅e−22!=5e−2\begin{aligned}P(X\le2)&amp;=P(X=0)+P(X=1)+P(X=2)\\ &amp;=e^{-2}+\frac{2\cdot e^{-2}}{1!}+\frac{2^2\cdot e^{-2}}{2!}=5e^{-2}\end{aligned}P(X≤2)amp;=P(X=0)+P(X=1)+P(X=2)amp;=e−2+1!2⋅e−2+2!22⋅e−2=5e−2