Tall#
Algebra
\[
a(b + c) = ab + ac
\]
\[
(a + b)^2 = a^2 + 2ab + b^2
\]
Tallmengder og symboler
\[\begin{align*}
x &\in \mathbb{R} \\
\\
n &\in \{1, 2, 5\} \\
\\
y &\in \langle 2, 5] \\
\\
-2 &< z \leq 5
\end{align*}\]
Tallfølger
\[
a_n = 2n - 1 \qfor n \in \mathbb{N}
\]
for n in range(1, 6):
a = 2 * n - 1
print(a)