Casio fx-115ES Manual do Utilizador descarregar pdf (Página 35)

E-33

k Converting an Input Value to the

Calculator’s Default Angle Unit

After inputting a value, press 1G(DRG') to display the angle

unit specification menu shown below. Press the number key that

corresponds to the angle unit of the input value. The calculator will

automatically convert it to the calculator’s default angle unit.

Example: To convert the following values to degrees:

radians = 90°, 50 grads = 45°

The following procedure assumes that the calculator’s default angle

unit is degrees.

LINE

(15(π)/2)

1G(DRG')2(

501G(DRG')

Appendix

<#020> cos (π radians) = –1, cos (100 grads) = 0

<#021> cos

–1

(–1) = 180

cos

–1

(–1) = π

k Exponential Functions and Logarithmic

Functions

•Exponential and logarithmic functions can be used in the same

modes as the trigonometric functions.

•For the logarithmic function “log(”, you can specify base m using

the syntax “log (m, n)”.

If you input only a single value, a base of 10 is used for the

calculation.

• “ln(” is a natural logarithm function with base e.

•You can also use the & key when inputting an expression with

the form of “logmn” while using Math format. For details, see

Appendix <#022>. Note that you must input the base (base m)

when using the & key for input.

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Casio fx-115ES Manual do Utilizador Página 35