easy · GMAT Quant
A sensor calibration process defines a piece-wise deviation function h(x) such that h(x) = 2x + 1 for x ≥ 0, and h(x) = -2x + 1 for x < 0.
Which of the following expressions represents h(x) - h(-x) when x > 0?
- 0
- 4x
- 4x + 2
- 2
- -4x
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