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La funksjonen \$f\$ være gitt ved \$f(x)=\\simplify{{a}x^2+{b}x+{c}}\$.

Likningen til tangenten til \$f(x)\$ i punkt \$x=c\$ er

\n

\$y=f'(c)(x-c)+f(c)\$

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Finn den deriverte \$f'(x)\$

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Finn den deriverte i punkt \$x=\\var{d}\$, dvs. \$f'(\\var{d})\$

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Likningen til tangenten til \$f(x)\$ i punkt \$\\var{d}\$ blir \$y=\$[[0]]

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