Question

1.25的30次方等于多少

Answer 1

设：1.25^30=x
那么：
lg x =
= lg 1.25^30
= 30×lg 1.25 //：可查中学生数学用表或用计算器
= 30×0.096910013008056414358783315826521
= 2.9073003902416924307634994747956
x = 807.79356694631608874161005084957
x≈807.79