Hp 39g Graphing Calculator Manual do Utilizador descarregar pdf (Página 31)

Scientific

notation

(powers of 10)

Example

4 -7

A number like 5x10 or 3.21 x 10 is written in scientific

notation, that is, in terms of powers of ten. This is simpler to

work with than 50000 or 0.000000321. To enter numbers like

these, use eex. (This is easier than using fxjlOfx^.)

Calculate

3x 10

(T| 4 |SHIFT|££X

013 [)]

0 II]6 [shift |£EX

23CO E] 3 |SHIFT|££X

4.E-13*6.E23X.00003

8.E15

Explicit and

implicit

multiplication

HINT

Implied multiplication takes place when two operands appear

with no operator in between. If you enter AB, for example, the

result is A*B.

However, for clarity, it is better to include the multiplication

sign where you expect multiplication in an expression. It is

clearest to enter AB as A*B.

Implied multiplication will not always work as expected. For

example, entering A {B+4 ) will not give A* (B+4). Instead

an error message is displayed: “Invalid User Function”. This

is because the calculator interprets A (B+4) as meaning

‘evaluate function A at the value B+4’, and function A does

not exist. When in doubt, insert the * sign manually.

Getting started

1-19

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 291 292

Sem comentários

Hp 39g Graphing Calculator Manual do Utilizador Página 31