SCIENTIFIC CALCULATOR

11 Natural logarithms and the power of e on the calculator

Natural logarithms, for example could be analyzed on your calculatorusing key key. The second function of this key ( ) is to allow the calculation of powers for . A rough estimate for its own value can be obtained using the key sequence ( ).

Take note that is exactly the same as ln. Some calculators feature an key over .

20. Calculating natural logarithms and the powers of e

Determine the value of each of these with your calculator, giving each of the three answers to three important figures.

Get the answer

12 Calculator reference guide

Calculator options

General types

The calculator is able to operate in a variety of different modes:

COMP is a term utilized for general calculations.
STAT is a program utilized to perform statistical calculations.
TABLE is a tool used to build tables from numbers.

COMP stands for 'computation COMP' and STAT' is short for'statistics'..

Comp mode can be chosen the use of the keyboard sequence (COMP).

Mathematics-related modes

There are two ways to input maths applied to and displayed by the calculator:

Math mode, where fractions are entered and shown in their mathematically correct form like or some odd numbers can be displayed in surds (such as ) or multiples of (such as ).Math mode can be selected using the key sequence (SETUP) (MthIO).
Linear mode, in which fractions such as are entered and displayed using a linear notation - for example, 2 3 - and all irrational numbers (such as and ) are displayed as decimal approximations.Linear mode is selected by using the key sequence (SETUP) (LineIO).

Put simply, an irrational number can be expressed in terms of a simple fraction.

You will know you're in Math mode when the word Math is displayed near the right-hand top of the calculator display. If this is not shown, you are using Linear mode.

In Math mode it is possible to force the answer to display as a decimal using an option or you can toggle between the mathematical and decimal outputs by .

Fraction display modes

You can configure the calculator so that answers that are heavy on top (such such as ) can be displayed in mixed number format (such like ).

To make your calculator to display as mixed numbers, use this key sequence (SETUP) (ab/c).
To make the calculator to display top-heavy fractions, follow this key sequence (SETUP) (d/c).

Decimal display modes

The calculator is able to show decimal numbers in a variety of different ways:

Normal 1 (Norm 1) mode employs scientific notation for any value less than 0.01 however greater than -0.01 however, it displays answers according to the decimal places they're located within the limits that can fit on the display. This mode is entered using (SETUP) (Norm) .
Normal 2 (Norm 2) mode employs scientific notation for numbers less than 0.000000001 but higher than -0.000000001, but otherwise provides answers to whatever decimal points they have up to the maximum which can be fit on the screen. This mode is entered using (SETUP) (Norm) .
It is a mode that displays scientific notation (Sci) displays all decimal numbers in scientific notation, using the specified number of important figures. This mode is activated using (SETUP) (Sci) followed by the quantity of significant figures required for instance . If you are using your calculator is in this mode the indicator on your display is shown.
Fixed decimal-place modes (Fix) displays all decimal numbers within a specified quantity of decimal points (unless it is required to display the result on the display). This mode is activated by using (SETUP) (Fix) followed by the decimal number required, for example . If you're calculator is set in this mode the display indicator FIX is shown.

12.1 Display indicators

These are symbols that are displayed on the calculator display to indicate its current state of operation.

Symbol on display	Meaning
	This key has been pressed.
	You have pressed the key has been pressed.
M	A value is saved in the memory called 'M'.
STO	The"STORE" key ( (STO)) is activated.
RCL	The RECALL ( ) key has been hit.
	The calculator is designed to measure angles in degrees.
	The calculator is set to measure angles in radians.
	The calculator is designed to measure angles in Gradians.
FIX	The calculator is set to show the answers according to a set the number of decimal positions.
SCI	The calculator is set to provide results in scientific notation. an undetermined number of important figures.
Math	The calculator can be set to make use of Math mode to entry and displays.
STAT	The calculator is in stats mode.
	There's more info available than can be displayed, and you can access it by using the up and down cursor keys.
	The displayed line is longer than the space available on the screen. Other lines are displayed by scrolling with the buttons for left and right: along with .

12.2 Common operations

To	Key sequence
Turn on
Turn off	(OFF)Note this calculator will automatically turn off after 6 minutes.
Set the display's contrast.	(SETUP) () Then use the settings and modify, and press when complete.
Restore factory settings	(CLR) (Setup) (Yes)
Clear out the contents of all memories	(CLR) (Memory) (Yes)
Restore to default settings and wipe all data	(CLR) (All) (Yes)
Cancel a calculation or get rid of menus
Find out the answer
Obtain a decimal answer in Math mode
Toggle between exact and decimal results in Math mode
You can toggle between showing fractions as mixed numbers or fractions that are incorrect in Math mode
Use the result of earlier calculation...
... e.g. to find 42 minus the previous result
Record a value in 'M' memory	(STO) (M)
Clear a value in the memory of M	(STO) (M)
Include a value in the memory 'M'
Subtract a value from the one in the memory of 'M'.	(M-)
Display the value that is stored in the 'M' memory	(M)
Make use of the memory with the letter 'M' for the course of calculating...
... e.g. to find 42 less the value of the memory of 'M'.	(M)
The angles that are for measurement in degree	(SETUP) (Deg)
Be sure to measure angles measured in radians	(SETUP) (Rad)
Set answers to be displayed according to 3 decimal place (To utilize a different number of decimal place, replace with the number)	(SETUP) (Fix)
Set answers to be displayed in scientific notation with 3 significant figures (To use a different number of important figures replace this number)	(SETUP) (Sci)
Remove any rounding settings that affect display.	(SETUP) (Norm)