Question

Fungsi nilai mutlak f(x)=|ax + b|

Answer 1

|ax + b| = ax + b utk ax + b ≥ 0
ax + b ≥ 0
ax ≥ -b
x ≥ -b/a

|ax + b| = -(ax + b) utk ax + b < 0
ax + b < 0
x < -b/a