Casio fx-7400G PLUS Basic Operation Manual do Utilizador descarregar pdf (Página 5)

Basic Calculations Chapter 2

(2) Parentheses Calculation Priority Sequence

Expressions enclosed inside parentheses are always given priority in a calculation.

Example 1 100 – (2 + 3) × 4

Abaa-(c+d)

*ew

Example 2 (7 – 2) × (8 + 5)

•A multiplication sign immediately in front of an open parenthesis can be omitted.

A(h-c)(i+f)

•Any closing parentheses at the end of a calculation can be omitted, no matter

how many there are.

Parentheses are always closed in the operation examples presented in this manual.

(3) Negative Values

Use the - key to input negative values.

Example 56 × (–12) ÷ (–2.5)

Afg*-bc/

-c.fw

(4) Exponential Expressions

Use the E key to input exponents.

Example (4.5 × 10

) × (–2.3 × 10

–79

)

Ae.fEhf*-c.d

E-hjw

The above shows what would appear when the exponential display range is set to

Norm 1. It stands for –1.035 × 10

–3

, which is –0.001035.

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