Mobile - Everywhere Your Customers Are
Mobile - Everywhere Your Customers Are [Part II]
Combining Landline Phone Samples and Mobile Phone Samples in Germany: a Dual Frame Approach First Outcomes of a DFG*-Project Siegfried Gabler, Sabine Häder.
Answer: -3 if x ≥ -4 f(x) = -x if x ≤ -1. Answer: -1 if x ≥ 2 f(x) = x 2 if x < 2.
Siegfried Gabler, Sabine Häder
Combining Landline Phone Samples and Mobile Phone Samples in Germany: a Dual Frame Approach First Outcomes of a DFG*-Project
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