求解得到: 经验模型数据拟合结果对比: a0-1399923 ■ Figure411 12329119031 2400 An empirical model for predicting the elapsed time of a tape recorder a2-29.08333188 200 a31978472156 1600 a4-5354166491 a50.8013888621 800 a6-0.0624999978 a70.0019841269 0100200300400500600700800 经验模型拟合数据,并进行数据预测 ci100200300400500600700800 ti2054306779451233154218722224 Pn20543067794512154218722求解得到： 经验模型数据拟合结果对比： 经验模型拟合数据，并进行数据预测 a0 -13.9999923 a1 232.9119031 a2 -29.08333188 a3 19.78472156 a4 -5.354166491 a5 0.8013888621 a6 -0.0624999978 a7 0.0019841269 ci 100 200 300 400 500 600 700 800 ti 205 430 677 945 1233 1542 1872 2224 P7 205 430 677 945 1233 1542 1872 2224