Homework Help: Pre-Cal(Please help)

Posted by Abbey on Sunday, April 4, 2010 at 3:59pm.

1) Write the first five temrs of the geometric sequence

a1 = 2 r=sqrt3

I know the first term is 2 but the sqrt 3 threw me off so I do not know how to find the next numbers.

2) Find the nth term of the geometric sequence.

a2 = 3 a5 = 3/64 n=1

I know the formula is a1^r n-1 but I do not know how to find a1.

Pre-Cal(Please help) - Abbey, Sunday, April 4, 2010 at 5:46pm
Answered Already
Pre-Cal(Please help) - Damon, Sunday, April 4, 2010 at 5:49pm
2
2 sqrt 3
2*3 = 6
6 sqrt 3
6*3 = 18
18 sqrt 3
18*3 = 54 etc
Pre-Cal(Please help) - Damon, Sunday, April 4, 2010 at 5:57pm
a1
a1 r = 3
a1 r^2
a1 r^3
a1 r^4 = 3/64

so
a1 = 3/r

( 3 r^4/r) = 3/64
r^3 = 1/64 = 1/2^6
r = 1/2^2
r = 1/4
a1 = 12

Answer this Question

Related Questions

Pre-Cal - 1) Write the first five temrs of the geometric sequence a1 = 2 r=sqrt3...
Geometric Sequence - Find the fourth term (a4) of geometric sequence if the ...
Maths - 1..The first 2 terms of a geometric progression are the same as the ...
Math - A sequence is formed by adding together the corresponding terms of a ...
math - write the first five terms of a geometric sequence whose first term is ...
Maths - The first term of an arithmetic sequence is 2. The first, third and ...
math30 - Sequences 1)A sequence has a first term of 24 and every other term is ...
Geometric Sequence - The product of the first five terms of a geometric ...
algebra - Could someone check my work; 1. Generate the first five terms in the ...
PreCalc - 1) Determine the value of r (put this number in the first blank) and ...

For Further Reading

First Name:
School Subject:
Answer: