Posted by **david** on Monday, April 9, 2007 at 5:20pm.

what is the sum of geometric infinite series 3/2+ 9/16+ 27/128+ 81/1024=....

i know the formula is S=a/(1-r)

my teacher, he usually transforms into a formula of the sum series and finds out a and r.but i don't how to do that.

the pattern i saw is 3/2 + 3^2/2^4 + 3^3/2^7+ 3^4/2^10+....

a= 3/2 r= 3/8

3/2 + 3/2*3/8 + 3/2*3/8*3/8 + ....

## Answer This Question

## Related Questions

- Pre-Calculus - Q.Determine the sum of each infinite geometric series. t_1= 8 r...
- algebra - Can someone please help me with this problem? Thanks! Evaluate the ...
- CALC II - Determine the convergence of the following series using the nth-...
- algebra(check) - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a...
- algebra - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b....
- algebra - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b....
- algebra - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b....
- calculus - Consider the infinite series of the form: (+/-)3(+/-)1(+/-)(1/3...
- calculus - Consider the infinite series of the form: (+/-)3(+/-)1(+/-)(1/3...
- Calculus - Consider the infinite series of the form: (+/-)3(+/-)1(+/-)(1/3...

More Related Questions