A5-A7 Flashcards
1
Q
Adding functions looks like …
A
(f + g)(x) = f(x) + g(x)
2
Q
Subtracting functions looks like …
A
(f - g)(x) = f(x) - g(x)
3
Q
Multiplying functions looks like …
A
(fg)(x) = f(x) * g(x)
4
Q
Dividing functions looks like …
A
(f/g)(x) = f(x)/g(x) where g(x) ≠ 0
5
Q
(f∘g)(x) or …
A
f(g(x))
6
Q
The inverse of f(x) is …
A
f^-1(x)
7
Q
You find the inverse of an equation by …
A
Switching x and y, solve
8
Q
Not all functions have inverses, an example of this is …
A
y = ±√x, it’s not a function so it has no inverse
9
Q
A one-to-one function is …
A
A function that for every y has only one x
10
Q
A one-to-one function on a graph must …
A
Pass both the VLT AND HLT
11
Q
Domain of h(x) : [-5,2]
Range of h^-1(x) : …
A
[-5,2]
12
Q
Range of h(x) : [-3,5]
Domain of h^-1(x) : …
A
[-3,5]
13
Q
The inverse of (x,y) is …
A
(y,x)
