# Tall





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gutter: 3
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link: tallregning/teori
link-type: doc
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**Tallregning**

^^^
$$
a(b + c) = ab + ac
$$

$$
(a + b)^2 = a^2 + 2ab + b^2
$$

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link: algebra/teori
link-type: doc
---
**Algebra**

^^^
$$
a(b + c) = ab + ac
$$

$$
(a + b)^2 = a^2 + 2ab + b^2
$$

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link: tallmengder/teori
link-type: doc
---
**Tallmengder** 

^^^

\begin{align*}
    x &\in \mathbb{R} \\
    \\
    n &\in \{1, 2, 5\} \\
    \\
    y &\in \langle 2, 5] \\
    \\
    -2 &< z \leq  5
\end{align*}
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link: setningslogikk/teori
link-type: doc
---
**Matematisk logikk og symboler** 

^^^

\begin{align*}
    x = -2 \implies |x| = 2
\end{align*}
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link: formler/teori
link-type: doc
---
**Formler**

^^^
$$
a_n = 2n - 1 \qfor n \in \mathbb{N}
$$

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link: programmering/teori
link-type: doc
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**Programmering av tallfølger**

^^^

:::{code-block} python
for n in range(1, 6):
    a = 2 * n - 1

    print(a)
:::

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