1
The functions f(x) and g(x) are given by the following:
f(x) = x
g(x) = + 2x
Calculate the value of gf()
2
2
The functions f(x) and g(x) are given by the following:
f(x) = x
g(x) = + 2x
Calculate the value of gf()
2
3
The functions f(x) and g(x) are given by the following:
f(x) = x
g(x) = 3x -
Solve the equation fg(x) =
4
4
The functions f(x) and g(x) are given by the following:
f(x) = x
g(x) = 3x -
Solve the equation fg(x) =
4
5
For all values of x
f(x) = x2 +
g(x) = x -
fg(x) can be written as x2 - ax + b, where a and b are integers.
Find a and b
a =
b =
2
6
For all values of x
f(x) = x2 +
g(x) = x -
fg(x) can be written as x2 - ax + b, where a and b are integers.
Find a and b
a =
b =
2
7
f is such that
f(x) = x -
Find f-1(x)
f-1(x) = /
2
8
f is such that
f(x) = x -
Find f-1(x)
f-1(x) = /
2
9
For all values of x,
f(x) = x - /
Work out f-1(x)
f-1(x) = /
3

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