---
title: Nullpunkter og startverdi for en funksjon
description: Lær å finne nullpunkter og startverdien til en funksjon fra en formel eller graf.
url: https://astra-ai.co/no/videos/funksjoner/funksjon/nullpunkter-og-startverdi-for-en-funksjon/
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type: video-lesson
published: 2026-10-01T21:09:50.897Z
updated: 2026-10-01T21:09:50.897Z
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---

# Nullpunkter og startverdi for en funksjon

> Forstå hvordan nullpunkter og startverdien til en funksjon bestemmes fra et uttrykk eller en graf.

## GRUNNLEGGENDE BEGREPER

Denne leksjonen forklarer nullpunkter og startverdi. Du lærer hva funksjonsverdien betyr når argumentet er null, og hvor grafen krysser aksene.

## METODE OG BRUK

Vi viser hvordan likninger løses for å finne nullpunkter, og hvordan konstantleddet gir startverdien. Grafiske og algebraiske metoder sammenlignes.

## OPPSUMMERING

Nullpunkter og startverdi er sentrale egenskaper når en funksjon skal analyseres.