|Sep25-06, 09:33 PM||#1|
Question on writing summations in expanded form
I have the following:
THe sumnation of 1/k! from k = 0, to n. I"m suppose to write this in expanded form.
I did the following:
1/0! + 1/1! + 1/2! + 1/3! +....+1/n! = 1 + 1 + 1/2 + 1/6 + 1/24 + 1/120 +...+ 1/n!
Is that what they wanted?
An example simliar to this one was the following:
Sumnation (-2)^i from i = 1 to n.
(-2)^1 + (-2)^2 + (-2)^3 + ... + (-2)^n = -2 + 2^2 -2^3 +...+(-1)^n(2)^n
from mine the signs don't seem to be changing, so is it just simply 1/n!
Also i was wondering if someone could check to see if i did this one correctly:
Write each using summnation or product notation.
41. n + (n-1)/2! + (n-2)/3! + (n-3)/4! + .. + 1/n!
Sumnation from k = 1 to n, (n-k)/n!
|Sep26-06, 04:34 AM||#2|
|Sep26-06, 11:57 AM||#3|
Thanks for the help!
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