math
posted by curious student .
write the following in a sigma notation
3/32+3/16+3/8+...+12288
so far ive gotten that a=3/32 and r=2/1
can you please help me further

sum = [sigma] 3/2^(6i), i from 1 to 18

what does "i" stand for?

In sigma notation we traditionally use i or n as the index of the notation.
You had asked for the expression in "sigma notation"
What you started doing is attempting to add up the values using a geometric series.
What you started is correct, but that was not asked for.
If you want the actual sum, you will first have to find how many terms there are, that is, what term number is 12288
the use the formula
S_{n} = a(r^n  1)/(r1) 
thank you muchly!
Respond to this Question
Similar Questions

Maths
Express the sum using summation notation: 1  1/2 + 1/3  1/4 + 1/5  ... (to 3n terms) If I'm doing this right so far, with k=1 (the number on bottom of the sigma), the equation after the sigma would be ((1)^(k+1)) / k I'd be able … 
Maths
Express the sum using summation notation: 1  1/2 + 1/3  1/4 + 1/5  ... (to 3n terms) If I'm doing this right so far, with k=1 (the number on bottom of the sigma), the equation after the sigma would be ((1)^(k+1)) / k I'd be able … 
Maths
Express the sum using summation notation: 1  1/2 + 1/3  1/4 + 1/5  ... (to 3n terms) If I'm doing this right so far, with k=1 (the number on bottom of the sigma), the equation after the sigma would be ((1)^(k+1)) / k I'd be able … 
Japanese Script 1
あa かka さsa たta なna はha まma やya らra いi きki しsi ちti にni ひhi みmi りri … 
Algebra II
Please helpI need to write 4+6+8+10 in sigma notation would it be sigma sign in middle (3) on top of sign, n=0 on bottom of signma notation and to the right it would be (4+2n) so it would look like (3) (sigma in middle) (4+2n) n=0 
PreCalcPlease check
Please check: 1.Write in expanded form: this is a sigma notation 4 on top signma in middle k=1 on bottom to right of sigma is (k1)(k2) I solved: k=1 (11)(12)=0(1)=0 K=2 (21)(22) = 1(0)=0 k=3(31)(32)=2(1)=2 k=4 (41)(4)=3(2)=6 … 
Physics
In the figure below, an electron is moving rightward between two parallel charged plates separated by distance d = 2.40 mm. The particle is speeding up from an initial speed of 3620 km/s at the left plate. ｜ ｜ … 
math
I just need help with this. Write the series in sigma notation. 1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2 5 A.) 1/4 sigma N n=1 6 B.) 1/4 sigma n n=1 5 C.)sigma n/n+3 n=1 6 D.)sigma n/n+3 n=1 
math
I just need help with this. Write the series in sigma notation. 1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2 5 A.) 1/4 sigma N n=1 6 B.) 1/4 sigma n n=1 5 C.)sigma n/n+3 n=1 6 D.)sigma n/n+3 n=1 
Chemistry Help Please!
SHOW WORK PLEASE SO I CAN DO THE REST OF MY HW BY LOOKING AT THIS QUESTION. The decomposition of hydrogen peroxide is catalyzed by iodide ion. The catalyzed reaction is thought to proceed by a twostep mechanism: 1. H2O2(aq) + I(aq) …