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The function f(x) = \left\ \matrix π \over 4 + \tan ^ - 1x, & \left| x \right| \le 1 1 \over 2\left( \left| x \right| - 1 \right), & \left| x \right| > 1 \right.is : | Watch the step-by-step video solution for this NIMCET PYQ.