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lfox21
28.10.2020 •
Mathematics
Use the table to determine the degree of the power function. What is the degree of the power function.
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Ответ:
The degree of the power function is 3
Step-by-step explanation:
Let the power function be f(x) = b × xᵃ
Therefore, from the table, we have;
40 = b × (-2)ᵃ
5 = b × (-1)ᵃ
0 = b × 0ᵃ
-5 = b × (1)ᵃ
-40 = b × (2)ᵃ
From -5 = b × (1)ᵃ, we have;
1ᵃ = 1, which gives;
-5 = b × 1
b = -5
From -40 = b × (2)ᵃ, where b = -5, we have;
-40 = -5 × (2)ᵃ
(2)ᵃ = -40/(-5) = 8
(2)ᵃ = 8 = (2)³
∴ a = 3
㏑(2)ᵃ = ㏑(8)
a·㏑(2) = ㏑(8)
a = ㏑(8)/(㏑(2)) = 3
a = 3
The power function is f(x) = -5 × x³
∴ The degree of the power function is 3.
Ответ:
The x value for the point located 2 over 3 the distance from A to B is![\frac{8}{3}](/tpl/images/0691/3941/1cd9b.png)
Step-by-step explanation:
A and B are the endpoints of line segment
We are supposed to find x value for the point located 2 over 3 the distance from A to B
Let C be the point located 2 over 3 the distance from A to B
So, m:n=2:1
So, to find the coordinates of point C we will use section formula :
So, the x value for the point located 2 over 3 the distance from A to B is![\frac{8}{3}](/tpl/images/0691/3941/1cd9b.png)