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H. TanLn
In algebra and calculus, you will often need to find an equation of a tangent line to a curve at a particular point. The TI-86 will draw a tangent line at a specified point. However, only the line is drawn; no values can be found. For analytical purposes, it is easier and better to use TANLN. The notation is TanLn(expression, x). You access it by pressing
