the general term of a sequence is given. Determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio.

Question

anonymous · Answer

$$an = 4n -2$$

anonymous · Answer

I think it is geometric

anonymous · Answer

lets take each value of n...

a0=4.0-2=-2

a1=4.1-2=2

a2=4.2-2=6

a3=4.3-2=10

and so on.. hence the sequence is in AP and the common difference is 4 :)

anonymous · Answer

oh so you just place a value in n and solve when one is not given

anonymous · Answer

yes...... thats the simple technique for such questions :)))))) @moser90

anonymous · Answer

thank you