A different approach to substitution consists in defining the substitution
expressions in calculator variables and placing the name of the variables in the
original expression. For example, in ALG mode, store the following variables:
Then, enter the expression A+B:
The last expression entered is automatically evaluated after pressing the `
key, producing the result shown above.
Operations with transcendental functions
The calculator offers a number of functions that can be used to replace
expressions containing logarithmic, exponential, trigonometric, and hyperbolic
functions in terms of trigonometric identities or in terms of exponential functions.
The menus containing functions to replace trigonometric functions can be
obtained directly from the keyboard by pressing the right-shift key followed by
the 8 key, i.e., ‚Ñ. The combination of this key with the left-shift key, i.e.,
‚ Ð, produces a menu that lets you replace expressions in terms of
exponential or natural logarithm functions. In the next sections we cover those
menus in more detail.
Expansion and factoring using log-exp functions
The „Ð produces the following menu:
Information and examples on these commands are available in the help facility
of the calculator. Some of the command listed in the EXP&LN menu, i.e., LIN,