1.2.21 Definition of a function (A-level only)

43%

The function $f\,$ is defined by

x^2 - 10x + 30, \quad x \in \mathbb{R}

a.

Find the range of $f (x)$

[3]

b.

Explain why the function $f (x)$ does not have an inverse

[1]

43%

The function $f\,$ is defined by

x^2 - 10x + 30, \quad x \in \mathbb{R}

a.

Find the range of $f (x)$

[3]

b.

Explain why the function $f (x)$ does not have an inverse

[1]

1.2.21 Definition of a function (A-level only) Questions