# Financial Calculations; Solving Equations With One Unknown Through Num.slv; Function Steq - HP 49g+ User Manual

Graphing calculator.

## Financial calculations

The calculations in item 5. Solve finance.. in the Numerical Solver (NUM.SLV)
are used for calculations of time value of money of interest in the discipline of
engineering economics and other financial applications. This application can
also be started by using the keystroke combination
9
the
key). Detailed explanations of these types of calculations are
presented in Chapter 6 of the calculator's User's Manual.

### Solving equations with one unknown through NUM.SLV

The calculator's NUM.SLV menu provides item
different types of equations in a single variable, including non-linear algebraic
and transcendental equations.
sin( x/3) = 0.
Simply enter the expression as an algebraic object and store it into variable
EQ. The required keystrokes in ALG mode are the following:
³ „ ¸ ~ „ x ™ - S „ ì
* ~ „ x / 3 ™ ‚ Å 0 ™

### Function STEQ

Function STEQ will store its argument into variable EQ, e.g., in ALG mode:
In RPN mode, enter the equation between apostrophes and activate command
STEQ. Thus, function STEQ can be used as a shortcut to store an expression
into variable EQ.
Press
to see the newly created EQ variable:
J
For example, let's solve the equation: e
K ~ e ~ q `
‚ Ò
(associated with
solve
1. Solve equation..
Page 6-9
x
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