write the formula for the nth term of the sequence
-(1/1), (3/2), -(7/6), (15/24), -(31/120)
Hello, bekah!
Julius is correct!
Write the formula for the term of the sequence:
. .
The signs alternate.
. . This involves: .
The numerators are: .
You might recognize them: one less than a power-of-2.
. .
Hence, the numerator is: .
The denominators are: .
You might recognize these as factorials:
. .
Hence, the denominator is: .
Therefore, the term is: .