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==equ==
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==cal==
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current location:Mathematical operation > History of Mathematical Computation
7/1+3/1-2/1=
1×1.86×1 161.44/(2×10^5 )(30+32.76)/(0.36+1.7×0.1)
1×1.86×1 161.44/(2×10^5 )(30+32.76)/(0.36+1.7×0.02)
1×1.86×1 161.44/(2×10^5 )(30+32.76)/(0.28+10×0.02)
1×1.86×1 161.44/(2×10^5 )(30+32.76)/(0.28+10×0.1)
1×1.86×1 161.44/(2×10^5 )((30+32.76)/(0.28+10×0.1))
5542/(200×1400)
1+0.5×1867.13/1089.75
x = 3 + 1
6/3
10(1/x+1/40)=1-1/4
a^3+3×(1475.7-335)×a^2-72×560.6×(1475.7+335-60)(610-a)/670=0
a^3+3×(1475.7-335)×a^2-24×560.6×(1475.7+335-60)(610-a)/670=0
a^3+3422a^2-52734.2(610-a)=0
a^3+3422a^2+52734.2a=52734.2×610
(a-1711)×(a^2-2874786.8)=52734.2×610
lnx=-3.056065922
ln1.45
ln(x/1-x)=-3.056065922
2=10/x
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