the square root is 8.246211251
Answer:
- f(x) = 5x + 10 and g(x) = 0.2x -2
- f(x) = 1/4x -1 and g(x) = 4x + 4
Step-by-step explanation:
f and g will be inverses if f(g(x)) = x.
A — f(g(x)) = 5(0.2x -2) +10 = x -10 +10 = x . . . . . inverses
B — f(g(x)) = (±√x+3)^2 +3 = x ±6√x +9 +3 ≠ x . . . . . not inverses
(even if it is g(x) = ±√(x+3), the functions are still not inverses)
C — 1/2(2x -7) +7 = x -7/2 +7 = x +7/2 ≠ x . . . . . not inverses
D — 1/4(4x +4) -1 = x +1 -1 = x . . . . . inverses
Using google calculator you can see that
e≈2.7 1 8 2 8 182846.....
Fifth decimal place is bold 8.
When we round up to 5th decimal place, we get
e≈2.7 1 8 2 8.