把一个数x立方后得x3,如下表:
x1.11.21.31.41.51.61.71.81.9x31.3311.7282.1972.7443.3754.0964.9135.8326.859x1.8111.8121.8131.8141.8151.8161.8171.8181.819x35.93965.94945.95935.96915.97905.98895.99886.00876.0186请观察上面表格中的数据并求值:则≈________.(保留三位有效数字)
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1.82
解析分析:<<,根据表格信息可得出