求log(2)(3+n^2)-2=log(2)3解题过程.
问题描述:
求log(2)(3+n^2)-2=log(2)3解题过程.
答
log(2)(3+n^2)-2=log(2)3
log(2)(3+n^2)=log(2)3+2
log(2)(3+n^2)=log(2)3+log(2)4
log(2)(3+n^2)=log(2)12
3+n^2=12
n^2=9
n=±3