Answer:
There are 5 terms in the series.
Step-by-step explanation:
Take logs to get n = 5
If the series is made up of numbers in an arithmetic progression, you have
where
is the first term and
is the common difference between terms.
Since the last term in the series is
, you have
Solve the system
and you'll find that the first term is
(with
).
-4 isn't a real number because there is no square root of -4. However, there is a cube root of -8, because -2 * -2 * -2 = -8.
Y = 7x^2-3
x=7y^2-3
.......................