Sign In
Sign Up
flag-nz

Geometric sequences

  1. Examples0/5 watched
  2. Practice0/12 practiced
  1. 0/5
  2. 0/12
Now Playing:Geometric sequences – Example 1a
Examples
0/5 watched
  1. Geometric sequence formula
    Consider the geometric sequence: 2, 6, 18, 54, … .
    1. Identify the common ratio.

      0/3

    2. Determine the sixth term of the sequence.

      0/3

    3. Which term in the sequence has a value of 39366?

      0/3

Practice
0/12
Geometric Sequences 1a
Arithmetic sequences
Jump to:NotesPrerequisitesRelated
Notes
A geometric sequence, also called geometric progression, is a number sequence with a common ratio between successive terms. A term in a geometric sequence can be found by multiplying the previous one by a non-zero and fixed number (a common ratio).
• geometric sequence: a sequence with a common ratio between successive terms.
• the nth term, tn{t_n} ,of a geometric sequence:
tn  =  t1⋅rn−1{t_n}\; = \;{t_1} \cdot {r^{n - 1}}
where, tn{t_n} : nth term
t1{t_1} : first term
r : common ratio