紧急!请帮忙算两个对数~
问题描述:
紧急!请帮忙算两个对数~
X的9次方为153.234,Y的7次方为175.188,分别求X与Y,
答
x^9=153.234
9*lgx=lg153.234
lgx=2.1854/9=0.2428
x=1.7490
Y^7=175.188
7*lgy=lg175.188
lgy=2.2435/7=0.3205
y=2.0917