y=8^xlog2(y)=log2(8^x)log2(y)=log2(2^3x)log2(y)=3xlog2(2)log2(y)=3xlog2(2)log2(y)=3xx=1/3*log2(y)x=log2[y^(1/3)]对换x和y得y=log2[x^(1/3)]
子夜吴歌·春歌(李白)
