Find an explicit formula for a sequence of the form a1, a2, a3, with the initial terms given below. 0, − 1 2 , 2 3 , − 3 4 , 4 5 , − 5 6 , 6 7

t(n) = (-1)^n * n/(n+1)

Step-by-step explanation:

First thing I'd say is that, the denominator happens to always be 1 more than the numerator including the the first term, which is 0/1

For that, we'd say the numerator = n, and since the denominator is 1 more than, we say it is = n + 1.

Then again, there is an alternating negative sign, that comes after every 2 terms. Note that when n is odd, the terms happen to be negative, but then, when n is even, the terms are positive.

Take a look at (−1)n, the exact same thing happened, and thus, we multiply each term by (−1)n so as to get the alternating negative sign.

Ultimately, we say that each term is in the form of

t(n) = (-1)^n * n/(n+1), Where n ≥ 0

the median here is 25. your lowest value is 14 and highest value is 48. to find the third quartile, find the medium number in between 25 and 48 which would be 42 i believe.