domain of 1/(x^3-x)
Let's evaluate the domain of 1x3 -x
For the expression 1x3 -x to exist, you must check: x3 -x ≠ 0
You can factorize the expression: x3 -x into: x·(x2 -1)
Solution found: x ≠ 0
Let's solve in ℝ: x2 -1 ≠ 0
Solution found: x ∈ ℝ \ { -1, 1 }
▶Domain of definition:   x ∈ ℝ \ { -1, 0, 1 }