Solving Your Own Equations - HP 95LX Quick Start Manual

Solving Your Own Equations
The Solver creates screens like the TVM screen to help you solve your
own equations. It is ideal for problems that you solve over and over.
Example: A Solver Equation for the Most Economic Ordering
Quantity.
The following equation defines the economic ordering quantity—the
optimum order size based on annual sales, purchase price, carrying
costs, and the cost of making the order itself:
EOQ=SART(2+FIXCST+*SALES(CARRYX~180*xPRICE> >
EOQ The economic ordering quantity.
FIXCST The fixed costs of placing and receiving an order.
SALES The annual unit sales.
CARRYY% The carrying costs as a percentage of inventory.
PRICE The purchase price per unit of inventory.
Enter this equation into the Solver:
Keys:
(MENU) S
©
Ec Order Qty
®
EOQ=SQRT(2+
FIXCST+SALES/
(CARRY%/100+
PRICE))
Description:
Selects Solve and displays the current catalog
of equations, which is probably empty.
Moves the highlight to the left-hand field for
the name.
Enters a name for the equation.
Highlights the right-hand field for the
equation.
Enters the equation. (The editor screen
automatically appears.)
Checks the equation, then displays the named
equation and its variables.
Introducing the Financial Calculator 4-9