運算式 1: negative "x" log Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis minus left parenthesis, 1 minus "x" , right parenthesis log Subscript, 2 , Baseline left parenthesis, 1 minus "x" , right parenthesis 有圖檔。 要進行圖形閱讀,請按 Alt + T 鍵。−xlog2x−1−xlog21−x