SOLUTION: I have a test coming up. I really need to know if I am on the right track. 1] list the first 4 terms of sequence given by the formula: s[n]=n!/n^2, n>=1. I came up with 1, 1

Question 66248: I have a test coming up. I really need to know if I am on the right track.
1] list the first 4 terms of sequence given by the formula: s[n]=n!/n^2, n>=1.
I came up with 1, 1/2, 2/3, 3/2.
2} list the first 4 terms of sequence given by the recursion formula
a[n]=2a[n-1]+3, with a[1]=1. I came up with (1,3,7,15)
3] the sum of the first 500 terms of aritmetic series 1+4+7+...
I came up with 125,000
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1] list the first 4 terms of sequence given by the formula: s[n]=n!/n^2, n>=1.
I came up with 1, 1/2, 2/3, 3/2.
Correct
---------------------
2} list the first 4 terms of sequence given by the recursion formula
a[n]=2a[n-1]+3, with a[1]=1. I came up with (1,3,7,15)
a(2)=2(1)+3=5
a(3)=2(5)+3=13
a(4)=2(13)+3=29
----------------------
3] the sum of the first 500 terms of aritmetic series 1+4+7+...
I came up with 125,000
a(1)=1
d=3
a(500)=1+499*3=1498
S(500)=(500/2)(1+1498)
S(500)=250(1499)=374,750
------------------------
Cheers,
Stan H.
RELATED QUESTIONS
What is the main thing I need to remember when I am solving equation problems. I have a... (answered by jim_thompson5910)

Hi there. I need to see if I am on the right track. I need to graph the following y =... (answered by jim_thompson5910)

I need to sketch a graph of the function: f(x)= x+1, for x<2 2-x, for x>(or equal (answered by jim_thompson5910)

y=2cos(3.14x+3.14)-2. I am pretty sure my graph is right. I need amplitude, period,... (answered by Alan3354)

I have to simplify this; sqrt20/5-1/sqrt5 I keep coming up with that this cannot be... (answered by rapaljer)

I need help w/ this question if you don't mind. log7 (1/49) I'm coming up with... (answered by josmiceli,jim_thompson5910)

Given two specific terms of geometric sequence. Find the common ratio and first term.... (answered by josgarithmetic,MathTherapy)

If a 4.4 pound bad of dog food costs $3.52, what is the cost per pound? i am coming up (answered by praseenakos@yahoo.com)

I might not have the topic exactly right, but I have an issue. This assignment was due... (answered by josgarithmetic,Edwin McCravy,MathLover1,ikleyn)