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Composite Function

Solve: If f...

Question

Solve: If $f (x) = (x - 1) (2 x + 1)$ Find $f (1), f (2)$ and $f (- 3)$

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Solution

$f (x) = (x - 1) (2 x + 1)$
$f (1) = (1 - 1) (2 + 1) = 0$
$f (2) = (2 - 1) (4 + 1) = 5$
$f (- 3) = (- 3 - 1) (- 6 + 1) = (- 4) (- 5) = 20$

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Similar questions

f (x + \frac{1}{2}) = f (x)

. If f(2)= 5 and

f (\frac{9}{4}) = 2

. Find f(-3) and

f (\frac{1}{4})

f (x) = x^{2} - 5 x + 1

f (2) - f (- 1) + f (\frac{1}{3})

f (x) = x^{2} - 4 x + 3

, then find the value of

f (2) - f (- 1) + f (\frac{1}{2})

f (x) = x^{2} + 1, x \leq 0

= 2 x - 1, 0 < x < 5

= 4 x + 3, x \geq 5

\frac{f (- 3) + f (2) + f (5)}{f (1)} =

f (x) = 2 x - 1

x > 1

= x^{2} + 1

- 1 \leq x \leq 1

\frac{f (1) + f (3) + f (0)}{f (2) + f (- 1) + f (\frac{1}{2})}

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