## HOW CAN WE HELP YOU?

Below are our most common frequently asked questions.

#### fx-100AU Plus 2nd Edition

CASIO supply the Australian market with two scientific calculators, the fx-82AU and the fx-100AU. What is the difference? In the simplest terms, the 100AU has more functions than the 82AU but uses a more traditional entry mode.

These differences can be explained in more detail under three main points:

1. The 82AU provides the option to use latest in input method (natural display or MATH, for example fractions can be entered as fractions). You can, however, also use LINE input on the 82AU where the use of brackets becomes important. The 100AU only offers LINE input.

2. The 82AU’s functionality is largely a subset of the functionality offered by the 100AU. The 100AU offers more functionality, mainly involving higher order functions. For example binary computation, complex number computation (polar and cartesian) and a host more.

3. The 82AU provides list-based Statistics input, whereas the 100AU does not.

#### fx-82AU Plus II 2nd Edition

When using a 9860G AU PLUS (or 9860G AU with OS 1.05 or later) to work with matrices, the commands Ref (row echelon form) and Rref (reduced row echelon form) can be useful. These are found from within q by pressing i then MAT (w) then u to see more commands then either Ref (r) or Rref (y).

Below is a video showing you how to calculate the least squares line of best fit and the associated correlation coefficient using the CASIO fx-82AU PLUS II.

The associate worksheet can be downloaded also. https://youtu.be/-CYnyWbaQ0I

The default setting of a CASIO fx-82 is for ‘natural’ mathematical input and output. This means that you can input your calculations in the same way that you would write them, and that the output is provided in a similar way.

The setting for mathematical output means that answers are given in fractional form, even when we might expect them not to be.

When using the current fx-82AU PLUS, the calculator can be set to LineO, meaning that fractional outputs only occur when fractional inputs are given.

To change to LineO, press w and make sure you are in COMP mode by pressing 1.

Now press q and then w to enter the SET UP.

Choose MthIO by pressing 1. You should now have a choice between MathsO and LineO. Press 2 for LineO.

The screen shots below illustrate the output when the fx-82 is set to LineO

Note: Older models of fx-82AU PLUS do not have the option of LineO

On an fx-100AU a previous command line can be recalled, edited and recalculated. To do this, press the ! or $ arrows (not the E arrow). These same arrows allow you to move the cursor within the line so that you can edit the command and then re-calcuate it.

CASIO supply the Australian market with two scientific calculators, the fx-82AU and the fx-100AU. What is the difference? In the simplest terms, the 100AU has more functions than the 82AU but uses a more traditional entry mode.

These differences can be explained in more detail under three main points:

1. The 82AU provides the option to use latest in input method (natural display or MATH, for example fractions can be entered as fractions). You can, however, also use LINE input on the 82AU where the use of brackets becomes important. The 100AU only offers LINE input.

2. The 82AU’s functionality is largely a subset of the functionality offered by the 100AU. The 100AU offers more functionality, mainly involving higher order functions. For example binary computation, complex number computation (polar and cartesian) and a host more.

3. The 82AU provides list-based Statistics input, whereas the 100AU does not.