Texas Instruments TI-83 Manual Book page 216

3. Press y <
tangent instruction is initiated.
4. Press y C
5. Press Í. The tangent line is drawn; the
value and the tangent-line equation are
displayed on the graph.
TI-83 Plus Draw Instructions
to select
5 5:Tangent(
¤ ¥
.
2 2
. The
X
213