Answer:
y=24.093915 + 0.02876392 x^2
Step-by-step explanation:
Minimize sum of squared deviations
I did it by hand on Android spreadsheet
x y f(x) (y-f(x))^2
0 25 24.093915 0.8209900272
5 23 23.374817 0.1404877835
10 20 21.217523 1.482362256
15 15 17.622033 6.875057053
20 13 12.588347 0.1694581924
25 9 6.116465 8.314774096
sum of squared devìation from the line 17.80312941
The solutions to f(x) = 64 is x = 7 and x = –7.
Solution:
Given data:
– – – – (1)
– – – – (2)
To find the solutions to f(x) = 64.
Equate equation (1) and (2), we get
Subtract 15 from both sides of the equation.
Taking square root on both sides of the equation, we get
x = ±7
The solutions to f(x) = 64 is x = 7 and x = –7.
