ft; white-space: pre-wrap;  }</style></head><body><div class = rtcContent><h1  class = 'S0'><span>Function Notations</span></h1><div  class = 'S1'><span style=' font-weight: bold;'>back to </span><a href = "https://fanwangecon.github.io"><span style=' font-weight: bold;'>Fan</span></a><span style=' font-weight: bold;'>'s </span><a href = "https://fanwangecon.github.io/Math4Econ/"><span style=' font-weight: bold;'>Intro Math for Econ</span></a><span style=' font-weight: bold;'>,  </span><a href = "https://fa