Exercises 1—14, to establish a big- O relationship, find witnesses C and k such that | f ( x ) | ≤ C | g ( x ) | whenever x > k . Use the definition of “ f ( x ) is O ( g ( x ) ) ” to show that 2 x + 17 is O ( 3 x ) .
Exercises 1—14, to establish a big- O relationship, find witnesses C and k such that | f ( x ) | ≤ C | g ( x ) | whenever x > k . Use the definition of “ f ( x ) is O ( g ( x ) ) ” to show that 2 x + 17 is O ( 3 x ) .
Solution Summary: The author explains that the given function is O(3x).
In Exercises 33–38, express the function, f, in simplified form.
Assume that x can be any real number.
33. f(x) = V36(x + 2)²
34. f(x) = V81(x – 2)2
35. f(x) = V32(x + 2)³
36. f(x) = V48(x – 2)³
37. f(x) = V3x² – 6x + 3
38. f(x) = V5x2 – 10x + 5
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In Exercises 102–103, find a. (fog)(x); b. the domain of (fo g).
x + 1
* - 2"
103. f(x) = Vx – 1, g(x) = x + 3
102. f(x) =
8(x)
1. Determine whether each of these functions is O(x). a) f (x) = 10 b) f (x) = 3x+7 c) f (x) = x2+x+1 d) f (x) = 5log x e) f (x) = ⌊x⌋ f ) f (x) =⌈x/2⌉
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