**TI85** Program file dated 07/16/97, 17:05˜”€?¬˜£ “Diffrntl“‘ìoè-Enter function: /3Foæ-Enter x-value: /2xoæ-Enter ¾x: /=oî3F/3Foé-¾y=/%3F/2x/2x`=a%3F/2x/2xoé-dy=/*3F/2x/2x=oëD1/D1/-}/