Is this about a sum of fractions? Well, uh... Yes, 1/2+1/6+1/12+1/20+1/30 = 5/6.
hi everyone
need help to verify my working.
question:
compute S5 for
an(limit=infinity,n=1) if 1/(n(n+1))
my working=
n=1,= 1/(1(1+1)) =1/2
n=2,= 1/(2(2+1)) =1/6
n=3,= 1/(3(3+1)) =1/12
n=4,= 1/(4(4+1)) =1/20
n=5,= 1/(5(5+1)) =1/30
sum = 1/2+1/6+1/12+1/20+1/30 = 5/6
thank you in advance for all your help