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Question
Redefine the function which is given by f(x) = `|x - 1| + |1 + x|, -2 ≤ x ≤ 2`
Solution
f(x) = `|x - 1| + |1 + x|, -2 ≤ x ≤ 2`
= `{(-x + 1 - 1 - x",", -2 ≤ x < -1),(-x + 1 + x + 1",", -1 ≤ x < 1),(x - 1 + 1 + x",", 1 ≤ x ≤ 2):}`
= `{{:(-2x",", -2 ≤ x < - 1),(2",", -1 ≤ x < 1),(2x",", 1 ≤ x ≤ 2):}`
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