Resposta:
a) [tex]f(2)=5[/tex]
b) [tex]f(-2)=21[/tex]
c) [tex]f(h+1)=3h^2+2h[/tex]
Explicação passo a passo:
Basta substituir os valores passados e realizar os cálculos.
Item a:
[tex]f(2)=3\cdot2^2-4\cdot2+1\\\\f(2)=3\cdot4-8+1\\\\f(2)=12-8+1\\\\f(2)=5[/tex]
Item b:
[tex]f(-2)=3\cdot(-2)^2-4\cdot(-2)+1\\\\f(-2)=3\cdot4+8+1\\\\f(-2)=12+8+1\\\\f(-2)=21[/tex]
Item c:
[tex]f(h+1)=3\cdot(h+1)^2-4\cdot(h+1)+1\\\\f(h+1)=3\cdot(h^2+2h+1)-4h-4+1\\\\f(h+1)=3h^2+6h+3-4h-3\\\\f(h+1)=3h^2+2h[/tex]
