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Let f : R \to R be a function defined as f(x) = \left\ \matrix 5 & ; & x \le 1 \cr a + bx & ; & 1 < x < 3 \cr b + 5x & ; & 3 \le x < 5 \cr 30 & ; & x \ge 5 \cr \right. Then, f is | Watch the step-by-step video solution for this NIMCET PYQ.