Can you help me arrive at the formula for the nth term of the series of 2^n in term of n

i.e I am looking for f such that f(5) = 2 + 4 + 8 + 16 + 32

Answers
S(n)=2^1+2^2+2^3+ + 2^n
ianmoth
13 June 2012
S(n)-2S(n)=2-2^(n+1)
ianmoth
13 June 2012
2S(n)=2^2+2^3+2^4+ +2^(n+1)
ianmoth
13 June 2012
Can you take it from here?
ianmoth
13 June 2012
Thank you
manouella
21 June 2012
All clear
manouella
21 June 2012
can you help me understand how to find the rate of change of this function
kb
22 June 2012
can you help me to understand how to find the rate of change of this function y=(〖13x〗^2-90).ln⁡(x). ?
kb
22 June 2012
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