方程log2(2的x次方)log2(2的x+1次方+2)的解为
问题描述:
方程log2(2的x次方)log2(2的x+1次方+2)的解为
答
原题无解!若将题改成:方程log2(2的x次方)log2(2的x+1次方-2)的解为:x ( x + 1 ) - 2 = 0 x^2 + x - 2 = 0 ( x - 1 )( x + 2) = 0 x1 = 1, x2 = ...