3° tarea 07-09-2010

1.- a1= -27 d= 2 12 terminos

sucesion=-29,-31,-33,-35,-37,-39,-41,-43,-45,-47,-49,-51

2.- a1= -34/9 d= 2/3 9 terminos

sucesion= -99/23, -93/81,-117/293.-105/729,-11437/2187,-945/6561,-10287/19685,-8505/54049,-82583/102143

3.- a1= 67 d= -3.75 10 terminos

sucesion=-3.08,6.83,-3.08,6.83,-3.08,6.83,-3.08,6.83,-3.08,6.83

4.- a1= 128.15 d=-12.35 7 terminos

sucesion=-140.5,152.85,-140.5,152.85,-140.5,152.85,-140.5

5.- a1= 63/7 d= -9/7 11 terminos

sucesion=-54/7,63/7,-54/7,63/7,-54/7,63/7,-54/7,63/7,-54/7,63/7,-54/7

6.- a1= -3 an= 187 n= -75


Sn=-6900

7.- a1= 2 an= 215 n= 164

Sn=-11794

8.- a1= 21 an= 276 n= 321

Sn=47668.5


9.- a1= -78 d= -49

Sn=-126


10.- a1= 345 d= -169

Sn=177