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SERIES Y SUCESIONES<br />

Aritméticas<br />

a, a d, a 2d, a 3d, a 4d,...<br />

a n a n 1d<br />

S n n<br />

a k n 2 2a n 1d naa a b n<br />

2<br />

k1<br />

Geométricas<br />

a, ar, ar 2 , ar 3 , ar 4 ,...<br />

a n ar n1<br />

S n n<br />

k1<br />

a k a 1 n<br />

r<br />

<br />

1 r<br />

Si ⏐r ⏐ 1, entonces la suma de una serie geométrica<br />

infinita es<br />

a<br />

S <br />

1 r<br />

SECCIONES CÓNICAS<br />

Círculos<br />

1x h2 2 1y k2 2 r 2<br />

Parábolas<br />

x 2 4py<br />

y<br />

Focos 10, p2, directriz y p<br />

y<br />

p<br />

(h, k)<br />

p>0<br />

x<br />

pb<br />

a a>b<br />

c<br />

_a _c c a x<br />

_b b x<br />

_c<br />

_b<br />

_a<br />

Focos 1c, 02, c 2 a 2 b 2 Focos 10, c2, c 2 a 2 b 2<br />

Hipérbolas<br />

x 2<br />

y 2<br />

a<br />

2 2<br />

b<br />

1<br />

y<br />

_c<br />

_a<br />

b<br />

_b<br />

c<br />

a<br />

x<br />

x2<br />

y2<br />

1<br />

b 2 a 2<br />

y<br />

a<br />

c<br />

Focos 1c, 02, c 2 a 2 b 2 Focos 10, c2, c 2 a 2 b 2<br />

_b<br />

_a<br />

_c<br />

b<br />

x

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