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Working in equation writer, Working in equation writer -9, Eval – HP 49g Graphing Calculator User Manual

Page 119

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7. Apply the command to simplify the result.

! fJilD KYZ HE!-! C=

iHOMEJ _________

:EKPRND

-[i€XF(i.X'ir)^]+l

_____________ 2'EXP(i’X''n')

Working in Equation Writer

In Equation Writer, you can apply a computer algebra command to the

entire expression, or you can select a part of the expression to apply a
command to. See chapter 3, “Creating and editing expressions”, for details

on how to use Equation Writer.

In Equation Writer, you can use only those commands that

require one argument, and you cannot use commands that return
more than one result.

The following example demonstrates how to use Equation Writer to

evaluate the integral of an expression between two indefinite limits, and

factorize a part of the result. The expression to evaluate is:

1 ^ 2

J (x + 3 x ) d x

1. Open Equation Writer and enter the

expression.

2. Select the expression.

3. Evaluate the expression

EVAL

Working with expressions

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