Five marks exercise problems X — task. Mathematics State Board, Class 10.

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A function

$f: [-5, 9] \rightarrow \mathbb{R}$ is defined as follows:

$f (x) = \{\begin{array}{l} 6 x + 1 \\ 5 x^{2} - 1 \\ 3 x - 4 \end{array} \begin{array}{l} if \\ if \\ if \end{array} \begin{array}{l} - 5 \leq x < 2 \\ 2 \leq x < 6 \\ 6 \leq x \leq 9 \end{array}$ , Find:

(i)

$f(-3) + f(2)$

$=$

(ii)

$f(7) - f(1)$

$=$

(iii)

$2f(4) + f(8)$

$=$

(iv)

$\frac{2 f (- 2) - f (6)}{f (4) + f (- 2)}$

$=$

$\frac{i}{i}$

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25. Five marks exercise problems X

Exercise condition: