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Graphics Interchange Format  |  1997-04-17  |  36.2 KB  |  403x280  |  4-bit (16 colors)
   ocr: (a) - da - height - - (b) Area - - 4tb, height X 2 d=JO) b=fx,+h) Area-, th xth fx,th) Mr)tixth) 2 Figure 2: (a) Ibe area ofa trapezoid; (b) ustng a rapezoid to approximate an integral.