Calculators

(parentheses), {braces}, and [brackets]

EXAMPLE: for the nubmers 1 x 3 + 2 x 4

(1 x 3) + (2 x 4) = 3 + 8 = 11

1 x (3 + 2) x 4 = 1 x 5 x 4 = 20

I think you are thinking "natural logarithm" which is ln (lowercase L, not I). If you have taken calculus you learn about logarithm and its relationship with exponents

Simply type in 2500000. In scientific calculators it can also be done by typing in the form of exponents, that is, 2.5x10^(6).

Calculate the area to be covered. (A)

Calculate the area per board or pack (B)

Divide (B) into (A)

On the Casio fx-115ES calculator, the infinity symbol (∞) is located above the division symbol (/) on the same key. To access the infinity symbol, you would press the "Shift" key followed by the division key. This key combination will allow you to input or calculate values involving infinity on the calculator.

1972 link here for evidence http://datamath.org/BASIC/DATAMATH/ti-2500-1.htm

Input is when you type with the calculator

abacus

To find anti log of a number enter the number as the exponent of 10.

You press the button that has the Clock/Calendar picture on it. On the first push, the date will show. On the second push, the time will show.

If you want to print just the date, then push the Clock/Calendar button once (showing the date) - and press the button that has the #/Diamond picture on it (to the right of the + button) and it will print.

If you want the date and time, then do as stated above for the date, then push the Clock/Calendar button again to get to the time and press the button that has the #/Diamond picture on it.

TaDa -

They are the same thing, Casio calls it FX-115ES in some countries, such as the U.S., and FX-991ES in most other countries. I believe this has to do with model name recognition. "FX-115" has been used in various U.S. models for a long time.

On a scientific calculator, you could press 1, and then press antilog (base 10) twice. The key might be labelled something like 10x.

not a number

Silicon based semiconductors are the most commonly used semiconductor material in calculators. Silicon semiconductors are also extensively used in computers.

how to change tax rate

If you don't know what the answer is to a hard maths question people use calculators. Like 644 times 1076? Who would know that!?

type in 9 x 10 then press this button (^) and press 4 and the equals sign

yes....you can use any calculator that you are comfortable with....

abicuss

Yes. It does not have to be an exact value.

The older models, Japan. The newer models, China, like all other brands.

All you have to do is multiply 0.25 by whatever the number is.

all clear

There are a lot of models to the scientific calcuator and I don't know if they all work the same.

On the more standard versions, you can generate a uniform random deviate, from 0 to 0.999 by pressing shift Ran# = .

I have included a general link, but if it doesn't work, then you can do a search under casio calculator manual model number xxxx, and download a users manual. Good luck.

There may be some silicon, Si, in the semi-conductors.