【評論主題】5.

【評論內容】

知道 10^2.8=X ；10^5.6=Y

則題目問你log(X^2+Y)等於問你log(10^5.6+10^5.6)=log(2*10^5.6)=log2+log10^5.6=0.3010+5.6=5.9010