求log(2+√3)(√3-2)^2的值,

问题描述:

求log(2+√3)(√3-2)^2的值,


∵(2+√3)(2-√3)=1;
∴(√3-2)^2=(2-√3)^2=[1/(2+√3)]^2
log(2+√3)(底)(√3-2)^2
=log(2+√3)(底)[1/(2+√3)]^2
=log(2+√3)(底)[(2+√3)]^(-2)
=-2