Problem is:
If done on the calculator the result is
I must be doing something incorrectly...
-Add
-Add
So I get
Anyone know what I did incorrectly?
A proper way to do it would be
If working in significance arithmetic this would need to be rounded accordingly.
What do you mean, "but in parentheses"? Adding parentheses to the expression you indicated has no effect because multiplication is associative.
For help with mathematical typesetting, see LaTeX Help Subforum.
You need to realize that means nothing more than 1.23 multiplied by 10^4. Compute as you would any other expression involving multiplication and division. Remember rules for exponents, and .
Yep, I located LaTex in the faq and finally now in the forum.. mods need to fix the link.
Anyway, the math is being multipled as noted... the work is all there, but suspect your suggesting not to solve the value of the power until the final result.
Also, in parentheses the denomenator is , with what you had wouldn't that be incorrect? If there was a problem of , wouldn't that be not ?
The correct answer is indeed 43469706.81 (rounded). I see you had this all along, but using the method outlined above is more efficient (at least for most of these types of problems that you would need to work out on paper). You must be typing something wrong into your calculator because is not correct.
That's what confused me... not sure how displayed, but I calculated it several times and got that and been trying to figure out how it came out to , the math I did came out to ... writing out the long way too... but I like your suggestion... the more efficient the better. Though should be correct?
Rounded to four significant figures, yes is correct.
Maybe I'm preaching to the choir but for example if you were presented with this problem
you would definitely not want to expand numerator and denominator separately, but rather use the method given above and immediately see that the answer is .
As to your calculator woes, it's kind of hard to "diagnose over the phone" (meaning it would be much easier if I could see in person), but I suppose if you described what kind of calculator you have and what keystrokes you used we might get to the bottom of it.
correct answer is
to get it by calculator :
enter 5.16 then pres "exp" than 6 than "-" (+/- probably is written) than multiply "*" then enter 8.3 than "exp" than 5 pres "=" , than divede ( / ) than 2.07 again "exp" and 4.... press "=" again (you can do it without "=" before dividing but if you need to write down on paper .... ) than you will get 0.000208101 so now press "FIX" or something like that (depending on type of calculator , can be F -> E .... or something ) than you will get