Question

considerando a função f(x)=x+3x+1 calcule f(1) f(0) f(-1)

Answer 1

f(1)=1+3·1+1
f(1)=1+3+1
f(1)=5

f(0)=0+3·0+1
f(0)=0+0+1
f(0)=1

f(-1)=-1+3·(-1)+1
f(-1)= -1 -3 +1
f(-1)= -3