Problem

Problem

Consider the function f(x)=x2x2−1f(x) = \frac{x^2}{x^2 - 1} The interval in which ff is increasing is a. (−1,1)(-1, 1) b. (−∞,−1)∪(−1,0)(-\infty, -1) \cup (-1, 0) c. (−∞,∞)−{−1,1}(-\infty, \infty) - \{-1, 1\} d. (0,1)∪(1,∞)(0, 1) \cup (1, \infty)

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