Texas Instruments TI-84 Plus Manual Book page 188

3. Press y <
tangent instruction is initiated.
4. Press y C
5. Press Í. The tangent line is drawn; the X
value and the tangent-line equation are displayed
on the graph.
Chapter 8: Draw Instructions
to select
5 5:Tangent(
¤ ¥
.
2 2
. The
185