i) Write a Sigma-notation summation for: the sum of the first “n” odd positive integers. For…

i) Write a Sigma-notation summation for: the sum of the first
“n” odd positive integers. For example, if n=4, it should sum like
this: 1 + 3 + 5 + 7.
ii) Starting with: 1+sum r^n, n=1 to infinity, rewrite it as
just one summation without the 1+ out front.
iii) Starting with: sum 1/n, n=1 to infinity, rewrite it as two
terms out front, and then the sum starting at n=3.
iv) Starting with: sum 1/(n+1), n=0 to 5, rewrite it to start
with n=1. Try thinking of it as a u-substitution? Here, we aren’t
talking about moving terms out front–keep it as one single
sum.