Hp 48g Graphing Calculator Bedienungsanleitung Seite 96

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To edit by backspacing:
1. Press Q until you delete the error.
2. Complete the expression correctly.
To edit the full equation:
1. If the equation ends in an incomplete subexpression, complete it,
2. Press sum)-
3. Edit the equation in the command line.
4. Press (enter) to save the changes (or press (CANCEL) to discard
them) and return to the Equation Writer application.
To view a large equation or unit object:
1. Press (^i^(PICTURE) to activate scrolling mode.
2. Press ®®®(D to move the viewing “window,”
3. Press (^(PICTURE) to return to the previous mode.
Editing with Subexpressions
The Selection environment is a special part of the EquationWriter
application used to specify a subexpression in the equation,
A subexpression consists of a function and its arguments. The function
that defines a subexpression is called the top-level function for that
subexpression. The top-level function is essentially the last function to
be evaluated following the usual rules of algebraic precedence.
For example, in the expression ' H+B*C.-"D ', the top level function for
the subexpression ' B*C ' is *, the top-level function for ' ' is
and the top level function for ' HTB*C.--D ‘ is +. You can specify an
individual object (a name, for example) as the subexpression.
You can also use the Selection environment to specify a subexpression
to rearrange using the Rules transformations—see “Manipulating
Subexpressions” on page 20-19.
To edit a subexpression of an equation:
1. If the equation ends in an incomplete subexpression, complete it.
2. Press a to activate the Selection environment.
3. Press ®(S®® to move the selection cursor to the top-level
function for the subexpression you want to edit.
7-10 The EquationWriter
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