Question

Dada a função afim f(x):-2x²+ 3, determine:

a) f(1)
b) f(0)
c) f(-1/2)

Answer 1

a) f(x): - 2x²+3
f(1): - 2·1²+3
f(1): -2²+3
f(1):+4+3
f(1): 7

b) f(0):- 2·0²+3
 f(0): 0²+3
 f(0): 0+3
 f(0): 3

c) 
$f( \frac{-1}{2}): -2\cdot (\frac{-1}{2})^{2}+3 \\ \\ f( \frac{-1}{2}): \frac{-2}{1} \cdot (\frac{-1}{2})^{2}+3 \\ \\ f( \frac{-1}{2}): (\frac{2}{2})^{2}+3 \\ \\ f( \frac{-1}{2}): 1^{2}+3 \\ \\ f( \frac{-1}{2}): 1+3 \\ \\ f( \frac{-1}{2}): 4$

Espero ter ajudado, qualquer dúvida comenta embaixo! :)