# same input, different answer ?

• Jul 30th 2005, 01:12 PM
david.goldsmith7
same input, different answer ?
I am using a Casio s-v.p.a.m calculator to do the following sum :-
10 raised to the power of .5 ( 10 ^.5 ) I get the answer 3.16227766.
However, if I input 10 raised to the power of 1 half ( 10 ^ 1 (ab/c)2 )
I get the answer 5, why is this? can any one help?
• Jul 30th 2005, 02:25 PM
MathGuru
Quote:

Originally Posted by david.goldsmith7
( 10 ^ 1 (ab/c)2 )

I don't understand (ab/c)
• Jul 31st 2005, 04:02 AM
david.goldsmith7
"ab/c" is the marking on the function button of the casio s-v.p.a.m calculator that allows you to put the " / " , seprating any whole number, the numerator and denominator.
So for 1 half you press; 1, then the ab/c button, then 2..... 1/2
It is a split line calculator top and bottom so If you press " = " straight after entering 1 (ab/c) 2 then 1/2 appears on the bottom line. The same button has a shift function on it aswell........d/c....... so if you press shift then ab/c / d/c button the 1/2 that is displayed in the lower part of the window switches to 0.5........it has to really, any thing else would be plain lies?

6 and 2 fifths...........6 ab/c 2 ab/c 5
press " = " shift d/c .........6.4
press ab/c again ..........32/5

Amazing!!! .......so using the calculator as such why is it that if I input 10 to the raised power of .5 ( 10^.5 ) I get the answer 3.16227766
BUT if I input 10 to the raised power of 1/2 (10^1 (ab/c) 2) I get the answer 5 ????????
• Jul 31st 2005, 04:28 AM
ticbol
On my TI-30XIIS calculator here,
10 ^ 1 Ab/c 2 = -----gives 3.16227766
64 ^ 1 Ab/c 3 = -----gives 4
8 ^ 2 Ab/c 3 = ----gives 4

So there is nothing wrong.

If in your Casio, 10 ^ 1 Ab/c 2 = ----gives 5, then there must be something wrong with your calculator.
• Aug 5th 2005, 04:02 AM
Cold
Your calculator is working out 10^1 = 10 then / 2 = 5. It's using the order of operations rule B.I.D.M.A.S and performing
1. Brackets
2. Indices
3. Division
4. Multiplication