Stepping down from an advanced calculator


by mindheavy
Tags: advanced, calculator, stepping
mindheavy
mindheavy is offline
#1
Oct2-13, 10:18 PM
P: 61
This is kind of sad, but I'm beginning to realize how much I rely on my graphing calculator any more for solving equations and whatnot. I am trying to incorporate a much simpler calculator from time to time (CASIO fx-260) and am struggling with some very basic operations.

Say I have the equation [itex]\tau_A=\frac{5kN\cdot.040}{\frac{\pi}{2}\cdot(.04^4)}[/itex] and I want to input this without using parenthesis. What is the order to type this in the calculator with?
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Office_Shredder
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#2
Oct2-13, 10:32 PM
Mentor
P: 4,499
If you have a calculator that won't track order of operations for you, and I have one that let's you type it out on the screen to confirm it's correct, I would just go with the latter and restrict myself to only using it for basic calculations.

As for your guy, I would start with .04, raise it to the power of 4, multiply by pi, divide by 2, hit the "1/x" key, then multiply by all the stuff in the numerator consecutively. The thing I would be worried about when entering this expression into the calculator is if I try to do divide by, then enter .04, then raise to the 4th power, that it would divide by .04 before raising everything I have so far to the 4th power (some calculators will recognize a Pemdas violation I believe, but some won't).
mindheavy
mindheavy is offline
#3
Oct2-13, 10:42 PM
P: 61
Thanks, following the order you laid out got the correct answer. I hadn't thought of doing the denominator then reciprocating it to multiply by the numerator, but I see it now!

verty
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#4
Oct3-13, 01:15 PM
HW Helper
P: 1,373

Stepping down from an advanced calculator


Use those bracket buttons, for example, numerator / ( .... ) =

Oh sorry, you said without using parentheses. Odd :).


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