Question

Dada a função f de R em R, f(x) = 2x – 3. Calcule:

2 , 15/2 , 9/2 , 6 , 17/2 , 4 , 23/2

URGENTE PESSOAL, ME AJUDEEM

Answer 1

Boa tarde

f(2)=  2(2)-3= 1
f(15/2)= 2(15/2)-3= 12
f(9/2)= 2(9/2)-3= 6
f(17/2)= 2(17/2)-3= 14
f(4)= 2(4)-3= 5
f(23/2)= 2(23/2)-3= 20

Answer 2

vamos lá...

f(x)=2x-3

$f(2)=2(2)-3=4-3=1 \\ \\ f( \frac{15}{2} )=\not2.( \frac{15}{\not2}-3=15-3=12 \\ \\ f( \frac{9}{2} )=\not2.( \frac{9}{\not2})-3=9-3=6 \\ \\ f(6)=2.(6)-3=12-3=9 \\ \\ f( \frac{17}{2})=\not2.( \frac{17}{\not2} )=17-3=14 \\ \\ f(4)=2.(4)-3=8-3=5 \\ \\ f( \frac{23}{2} )=\not2.(\frac{23}{\not2})-3=23-3=20$