表达式2: "f" left parenthesis, "x" , right parenthesis equals "r" Subscript, 0 , Baseline times StartFraction, 1 minus left parenthesis, 1 minus "r" , right parenthesis Superscript, "x" plus 1 , Baseline Over 1 , EndFraction 有图表。 要进行音频跟踪,按“Alt 键 + T”。fx=r0·1−1−rx+11