Question

Construa o gráfico da função modular f(x) = |x² + 4x|

Answer 1

f(-4) = |(-4)² + 4.(-4)|
f(-4) = |16 - 16|
f(-4) = 0

f(-3) = |(-3)² + 4.(-3)|
f(-3) = |9 - 12|
f(-3) = 3

f(-2) = |(-2)² + 4.(-2)|
f(-2) = |4 - 8|
f(-2) = 4

f(-1) = |(-1)² + 4.(-1)|
f(-1) = |1 - 4|
f(-1) = 3

f(0) = |0² + 4.0|
f(0) = 0

f(1) = |1² + 4.1|
f(1) = |1 + 4|
f(1) = 5

f(2) = |2² + 4.2|
f(2) = |4 + 8|
f(2) = 12

f(3) = |3² + 4.3|
f(3) = |9 + 12|
f(3) = 21

f(4) = |4² + 4.4|
f(4) = |16 + 16|
f(4) = 32