3cera. TAREA: Sucesiones y Series Numericas. (1-4) Matutino.

1.- a1= -27 d= 2 12 terminos
R=1-.-25 -23 -21 -19 -17 -15 -13 -11 -9 -7 -5 -3.



2.- a1= -34/9 d= 2/3 9 terminos
R= -84/27…..-198/81….-432/243….-810/729….-972/2187…-1458/6561....8748/19683....65610/59049....314928/117147.


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

R= 63.25 59.5 55.75 52 48.25 44.5 40.75 37 3 3.25.



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

R= 115.8 103.45 91.1 78.75 66.4 54.05 41.7.



5.- a1= 63/7 d= -9/7 11 terminos
R= 54/7 45/7 36/7 27/7 18/7 9/7 0/7 -9/7 -18/7 -27/7 -36/7.



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

R= (a1+ an)n/2 = (-3+187)-75/2

      (-3+187)-75/2 = (184)-75/2 = 13800/2= 6900.



7.- a1= 2 an= 215 n= 164
R= 7-(a1+an)n/2 = (2+215) 164/2

      2+215) 164/2= (217) 164/2= 35588/2 = 17794.



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

R=(21+276)321/2=(297)321/2=95337/2=47668.

9.- a1= -78 d= -49
R= 78+(-49)(n-1)=-78-49(n-1)=-127(n-1)=-126.



10.- a1= 345 d= -169

R= 345+(-169)(n-1)=345-169(n-1)=176(n-1)=177.