求下列各式的值 1)log3(27*9²) 2)lg100² 3)lg0.00001 4)In根号e
问题描述:
求下列各式的值 1)log3(27*9²) 2)lg100² 3)lg0.00001 4)In根号e
答
log3(27*9²)
=log3(27)+log3(9^2)
=log3(3^3)+log3(3^4)
=3+4
=7.
lg100²
=lg10^4
=4
Ine^(1/2)
=1/2.