**TI92P*calculusAppVariable file 09/19/06, 18:03Rdiffquot[¥ZTISMGavgRC(5x^3,x,h)åÙ‹““‘^ avgRC(10t^2-5t+7,t,h)åÙ- ‹“‹‹ “‹‘ì avgRC(x^3-6x,x,h)åÙ‹“‹“‘€ SMPSøm0