Bruksanvisning Aurora AX-501 Räknemaskin

Bruksanvisning

multiplication

When you press the key ( , the small sign”(

)”appears on the display above the digits, means that

parenthesis has been opened. This sign disappears

when the parenthesis is closed

b) Levels of the Parenthesis

There are 4 levels of parenthesis. This means that

you cannot have more than 4 operations pending.

-Try the calculation 2+(3+(4+(5+(6+7))) .

To carry out this calculation, simply press the keys in

the order they appear in writing. When you press the fifth

sign “+”, the error message will display.

c) Closing Parenthesis

Instead of closing the nested parenthesis and

pressing the key = , simply press the key = and

calculator will give the correct result. For example ,in the

calculation of 5×(4+9),you type 5 × ( 4 + 9 =

instead of 5 × ( 4 + 9 ) = you will get the

correct answer..

5. Selecting the Display Notation and Decimal

Places

 When calculation result is displayed in the floating

point system, pressing F↔E displays the result in

the scientific notation. Pressing F↔E once more

displays the result again in the floating point system.

 Pressing 2ndF TAB and any value between 0 and

9 specifies the number of decimal places in the

calculation result. To clear the setting of decimal

places, press 2ndF TAB · .

Example 1÷3

Key to Press

Display

ON/C

0.

1

1.

÷

1.

3

3.

= (floating point)

0.333333333

2ndF

0.333333333

TAB

0.333333333

2

0.33

F↔E

3.33 -01

F↔E

0.33

2ndF

0.33

TAB

0.33

.

0.333333333

If the value for floating point system does not fit in

the following range, the calculator will display the result

using scientific notation system:

0.000000001≤∣x∣≤9999999999

6. Angle Units : Degree, Radian and Gradient

Before any trigonometric calculation, make sure the

angle unit with which you use to make the calculation

conforms with the one that the calculator will use. The

angle unit is indicated above the display of the digits.

This unit is marked by “DEG” for degree, “RAD” for

radian and “GRAD” for gradient. Each press the key

DRG will alternate between these units.

You may also want to convert an angle into another

unit. The function that enables you to do that is the

second function of the key DRG, marked DRG►.

We shall try to convert 180° in radian. First, make

sure that the angle unit display is the degree(symbol

DEG):Press the number 180,then press the key 2ndF

and DRG, The calculator will display the value of

“π”(3.141592654),value of 180°in radian.

7. Addition, Multiplication, Subtraction and

Division

a) Addition of Two Numbers

Example: 8+5:

Key to Press

Display

ON/C

0.

8

8.

+

8.

5

5.

=

13.

b) Multiplication, Division and Subtraction of Two

Numbers

These calculations are performed in the same

manner as the addition.

8. Constant Calculations

In the constant calculations, the addend becomes a

constant. Subtraction and division are performed in the

same manner. For multiplication, the multiplicand

becomes a constant.

Example:

Key to Press

Display

ON/C

0.

5 8

58.

+

58.

6 4

64.

=

122.

4 5

45.

=

109.

7 3

73.

-

73.

5 7

57.

=

16.

4 9

49.

=

-8.

6 4

64.

÷

64.

8

8.

=

8.

1 6

16.

=

2.

3 6

36.

×

36.

5

5.

=

180.

8

8.

=

288.

9. Trigonometric Functions

The functions cosine, sine and tangent are accessed

respectively by the keys cos , sin , and tan .

To calculate, for example, the cosine of an angle,

enter the value of the angle, and press the key cos .

Example: The calculation cosine of 60

о

(make sure

the calculator is In degree mode.)

Key to Press

Display

ON/C

0.

6

6.

0

60.

cos

0.5

※ Attention: before making any calculations, check

the angle unit display by the calculator.

10. Logarithmic and Exponential Functions

The natural logarithm and common logarithm

functions are accessed respectively with the keys ln

and log .

The second function of the key ln is the inverse

function of the natural logarithm, or natural antilogarithm

e

x

.

The second function of the key log is the inverse

function of the common logarithm, or common

antilogarithm 10

x

.

11. The functions Square, Root, Power and

Reciprocal

The calculation square( x

2

), square root(√x), cubic

root(second function of the key √x ,marked by

3

x

), and

reciprocal(second function of the key x

2

,marked by 1/x)

is the same as the one explained above for trigonometric

functions. The value, ”x” must be enter first before the

chosen function. For the universal power(key y

x

), and

root (second function of the key y

x

,marked by ), enter

the value for “y” first then the value for “x”.

12. Hyperbolic/Inverse Hyperbolic Functions

Example: cosh5.7 sinh

-1

9.4 tanh8.7

Key to Press

Display

ON/C

0.

5 . 7

5.7

hyp

5.7

cos

149.4353735

9 . 4

9.4

2ndF

9.4

arc hyp

9.4

sin

-1

2.936674272

8 . 7

8.7

hyp

8.7

tan

0.999999944

13. Percentage Calculation

The second function of the key “=” (marked by “%”)

permits percentage calculations. We can sum up the

capabilities of this function in four

x

y

Betyg

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