Question

how to add irrational numbers using calculator.

Answer 1

Could you be more specific? Many modern calculators can i.e. handle square roots.
You can type:\[2\sqrt{2}+3\sqrt{2}=\]and the thing outputs\[5\sqrt{2}\]On the other hand, you don't need a calculator to get that answer ;)

Answer 2

just google it

Answer 3

http://easycalculation.com/rational-irrational-number.php

Answer 4

@ilene13: interesting calculator, but doesn't look like what's been asked imo...

Answer 5

they asked for a irrational calulator correct?

Answer 6

All this calculator does is state whether a certain number is rational or irrational. It doesn't add irrational numbers.

Answer 7

yes but what if i want to add two different irrational nos. I want to know that is there any way to increase precision instead of adding the number by converting in decimals and taking possible allowed digits in calci?

Answer 8

really oh i thought it did sorry...

Answer 9

i would just round it to the nearest hunderth then add them or find the square rootage of them and add them together ..

Answer 10

yep! in general we do this. But it's not much precise.

Answer 11

If you want to add two different kind of irrational numbers, say pi and sqrt(2), the result will be iirrational again. The accuracy of your calculator determines how many decimals can be given for the sum of the two.
Calculators represent every number as a rational number, with a certain maximum number of digits. There is now way to get more digits.

Answer 12

well what r u doing that you want to know the exact last digit?

Answer 13

Could you give an example of two irrational numbers you want to add?

Answer 14

unless you have a scientific calculator it goes on for quite a long time

Answer 15

ur example was good @ZeHanz

Answer 16

In that case, you've got infinite accuracy...

Answer 17

how?????

Answer 18

Well i know precision depends on the calculator's max. allowed digits. but instead of adding rounded fig. of irrational no. if we add it differently, i don't know how, may be we can get more precise answer.

Answer 19

@wini_boson: Well, the irrational number we've got is 5√2. This is the only way to describe this number accurately. Any representation with decimals is an approximation. After all, it has infinitely many decimals, without any repeating pattern in them. Therfore, is it common to just write this number as 5√2.