求函数y=(log2(x/3))(log2(x/4))在区间《2√2,8》上的最值
问题描述:
求函数y=(log2(x/3))(log2(x/4))在区间《2√2,8》上的最值
答
y=[log2(x)+log2(3)][log2(x)+log2(4)]
=[log2(x)+log2(3)][log2(x)+2)]
记:log2(x)=t,3/2