y = log10(-1 + 1 + |x - 1/2|)
To defined log x, we have
-1 + |x - 1/2| > 0
⇒ |x - 1/2| > 1
⇒ x - 1/2 > 1 or x - 1/2 < - 1
⇒ x > 3/2 or x < -1/2
⇒ x \(\in\) (\(-\infty, \frac{-1}2\)) U (3/2, \(\infty\))
Domain of y is (-\(\infty\), -1/2) U (3/2, \(\infty\))