Application Guide

142 Calculator Application
Editing Calculator Expressions
Although you cannot edit an expression in the Calculator history, you can copy all or
part of an expression from the history and paste it to the entry line. You can then edit
the entry line.
Positioning the Cursor in an Expression
▶ Press Tab, ◄, ►, ▲, or ▼ to move the cursor through the expression. The cursor
moves to the closest valid position in the direction that you press.
Note: An expression template may force the cursor to move through its parameters,
even though some parameters may not be exactly in the path of the cursor movement.
For example, moving upward from the main argument of an integral always moves the
cursor to the top limit.
Inserting into an Expression in the Entry Line
1. Position the cursor at the point where you want to insert additional elements.
2. Type the elements that you want to insert.
Note: When you insert an open parenthesis, Calculator adds a temporary close
parenthesis, displayed in gray. You can override the temporary parenthesis by typing
the same parenthesis manually or by entering something past the temporary
parenthesis (thereby implicitly validating its position in the expression). After you
override the temporary gray parenthesis, it is replaced with a black parenthesis.
Selecting Part of an Expression
1. Position the cursor at the starting point in the expression.
Handheld: Press ◄, ►, ▲, or ▼ to move the cursor.
2. Press and hold Shift, and then press ◄, ►, ▲, or ▼ to select.
Deleting all or part of an expression on the entry line
1. Select the part of the expression to delete.
2. Press Del.
Financial Calculations
Several TI-Nspire™ functions provide financial calculations, such as time value of
money, amortization calculations, and return on investment calculations.
The Calculator application also includes a Finance Solver. It lets you dynamically solve
several types of problems, such as loans and investments.