Mathematics
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current location:Mathematical operation > History of Mathematical Computation
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    72÷14
    45×72
    3264÷72
    72×4
    70×24
    65×15
    arccos(1/2)-arccos(-1/2)
    arccos(1/2)-arccos(-1/2)
    arccos1-arccos(-1)
    arccos1-arccos(-1)
    arctan(0.00125)

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