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HKDSE 2015 Paper I #19
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
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Rotating Points (Optical Illusion)
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Pelecoid
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Cell Phone Dilemma Graph - 1
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คิดเลขเร็ว
Engineering
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Histogram
Numbers
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Integral Calculus
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