Formler, matte 1 Flashcards

1
Q

Skivemetoden: Volum ved rotasjon om x-aksen (om linjen y = 0)

A

π・∫ ( f (x) ) ^2 dx

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2
Q

Skivemetoden: Volum ved rotasjon om en vilkårlig y = y。

A

π・∫ ( f (x) - y。) ^2 dx

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3
Q

Sylinderskallmetoden: Volum ved rotasjon om y - aksen (om linjen x = 0)

A

2π・∫ x ・ f (x) dx

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4
Q

Sylinderskallmetoden: Volum ved rotasjon om en vilkårlig x = x。

A

2π・∫ ৷ x - x。৷・ f (x) dx

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5
Q

Buelengde

A

∫ √ 1 + ( f’(x) )^2 dx

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6
Q

Rotasjonsflate (areal) om x-aksen

A

∫ 2π・৷ f(x) ৷・√ 1 + ( f’(x) )^2 dx

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7
Q

Rotasjonsflate (areal) om y-aksen

A

∫ 2π・৷ x ৷・√ 1 + ( f’(x) )^2 dx

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8
Q

sin x + cos x = ?

A

1

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9
Q

Forholdstesten

A

Vi har en rekke an

a = lim (n mot uendelig) a(n+1) / an

Konvergerer hvis a < 1
Divergerer hvis a = 0
Gir ingen konklusjon hvs a = 1

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10
Q

ln(a/b)

A

ln(a) - ln(b)

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11
Q

ln(a) + ln(b)

A

ln(a * b)

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12
Q

Definisjon av den deriverte

A

lim h → 0 ( f(x + h) - f(x) ) / h

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13
Q

e ^ (ln a) = ?

A

= a for alle a > 0

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14
Q

ln e^a =

A

a

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15
Q

log a^x =

A

x * log a

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