GEOMETRIC SEQUENCE (Finding the nth term)

GEOMETRIC SEQUENCE

Finding the nth term of a geometric sequence.

GEOMETRIC SEQUENCE

A sequence with a common ratio.

Multiple Choice

Is 2,4,8,16,... a geometric sequence?

• YES, IT IS A GEOMETRIC SEQUENCE WITH A COMMON RATIO OF 2.

• NO, IT IS NOT A GEOMETRIC SEQUENCE.

GEOMETRIC SEQUENCE

To find the nth term of the geometric sequence:

 $a_n=a_1r^{n-1}$  

GEOMETRIC SEQUENCE

To find the nth term of the geometric sequence:

 $a_n=a_1r^{n-1}$  

GEOMETRIC SEQUENCE

To find the nth term of the geometric sequence:

 $a_n=a_1r^{n-1}$  

Multiple Choice

Is 2, 6, 18, ... an arithmetic sequence or a geometric sequence?

• It is an arithmetic sequence.

• It is a geometric sequence.

Multiple Choice

What is the 8th term of the sequence 2,6,18,...?

On solving the problem, what is the formula to be used?

• $a_n=a_1+\left(n-1\right)d$

• $a_n=a_1r^{n-1}$

Multiple Choice

Is 2,4,8 ... an arithmetic sequence or a geometric sequence?

• It is an arithmetic sequence.

• It is a geometric sequence.

Multiple Choice

What is the 10th term of the sequence 2,4,8,...?

On solving the problem, what is the formula to be used?

• $a_n=a_1+\left(n-1\right)d$

• $a_n=a_1r^{n-1}$

Thank you!!!