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Graphics Interchange Format  |  1997-01-13  |  30.8 KB  |  376x271  |  4-bit (16 colors)
   ocr: (a) I C2(x)=PA* I - 2(LO(x)-1 (b) 20F100)-C16-C269 Figure 7: - - (a) - Parabola tbat closely approximates tbis residual error; (b) twice-corrected approximation.