Casio FX-100D Bedienungsanleitung PDF herunterladen (Seite 11)

FX 115 MS Training guide

Logarithms/Natural Logarithms

You can find logarithms, natural logarithms, and antilogarithms.

Examples:

Keystrokes Display

[log] [100] [=] 2

[ln] [90] [=] 4.49980967

[ln] [ALPHA] [e] 1

[SHIFT] [e

] [1] [=] 2.718281828

[SHIFT] [10

] [2] [=] 100

SOLVE Function

The SOLVE function lets you solve an expression using variables, without the need to simplify

the expression.

• When solving functions, be sure you are in COMP mode.

• If the expression does not include an equal sign (=), the solve function will set the

expression = 0.

• When entering “=” in your expression, be sure to use [ALPHA] [=].

Example:

Given height, time, and gravity, solve the equation for initial velocity: h = vt – ½ gt

Rewrite the equation using available variables: B = AC – ½ DC

C is the time it would take for an object thrown straight up with initial velocity A to reach

height B. Find the initial velocity A for a height of B = 14 meters and a time of C = 2

seconds. Gravitational acceleration D = 9.8 m/s

Enter the equation B = AC – ½ DC

. and press [SHIFT] [SOLVE].

You will be prompted for each value:

B? press [14] [=]

A? press the down arrow, as this is what you are solving for

C? press [2] [=]

D? press [9.8] [=]

Press the up arrow until you reach the unknown variable (in this case, A)

With A? displayed, press [SHIFT] [SOLVE].

References the Casio FX-115 MS User’s Guide Casio FX-115MS Scientific calculator

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Casio FX-100D Bedienungsanleitung Seite 11