henry1v
幼苗
共回答了22个问题采纳率:90.9% 举报
(iii)取(1.25+1.5)/2≈1.4,1.4²=1.96,1.4²<2<1.5²,得1.4<√2<1.5,即十分位上的数字为4
(iv)取(1.4+1.5)/2=1.45,1.45²≈2.1,由2<1.45²<1.5²,得1.4<√2<1.45
(v)取(1.4+1.45)/2≈1.43,1.43²≈2.04,由2<1.43²<1.45²,得1.4<√2<1.43
(v)取(1.4+1.43)/2≈1.42,1.42²≈2.02,由2<1.42²<1.43²,得1.4<√2<1.42
(vi)取(1.4+1.42)/2=1.41,1.41²≈1.99,由1.41²<2<1.42²,得1.41<√2<1.42,即百分位上的数字为1
1年前
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