Hello from MrBillDoesMath!
Answer:
a(n) = 12 - 3(n-1) , n = 1,2,3.,,
Discussion:
The terms are 12, 9, 6, 3 so we are apparently subtracting 3 from each succeeding term. . Hence
Thank you,
MrB
Step-by-step explanation:
1) UP
2) (2, -4)
3) x = 2
4) minimum
5) y = -4
6) Real numbers
7) -∞ ≤ x ≤ ∞, y≥ -4
8) y = -3
9) x = -2, x = 6
10) ∞
A
3
Some function [] rounds DOWN a number to the nearest integer. For example [1.5]=1, [2]=2, [-1.5]=-2, ...
Thus [-1.6]+[3.4]+[2.7]=-2+3+2=3.
to solve for a,
f(-1) = 5
a(-1)^2 + 1 = 5
a + 1 = 5, so a=4
