Re: HELP!!
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Re: HELP!!
I think if you write 10/2x on paper, it is obvious that you mean 10 over 2x,
otherwise you would write 10x/2 or (10/2)x. The 82 and 85 did it this way.
For whatever reason, TI then changed it and made it strictly left to right,
even so-called implied multiplication. I think it was better the 82/85 way,
but as long as you can remember on the 83 and 86 that 2x means 2*x, you're
fine.
>I am a high school teacher at Northern HS in MD. Our faculty has been
>recently debating an issue that up until yesterday seemed quite simple.
>We would like your help in resolving the issue.
>
>The problem: Evaluate 10/2x when x=4.
>
>Some of our faculty seems to think that 2x is like an understood group.
>Therefore, 10/8=1.25. According to Texas Instruments this is called
>"implied multiplication." Where the 2x is an implied group.
>
>On the other hand, according to the order of operations, mult and div go
>
>left to right, so 5*4=20. According to TI, this is called "explicit
>multiplication"
>
>For TI's definition of "Implicit vs. Explicit" go to:
>http://www.ti.com/calc/docs/faq/83faq039.htm
>
>Some of the Texas Instruments graphing calculators
>contradict themselves. The TI-81 treats 2x as a group, whereas the
>TI-83 does not.
>
>Any thoughts that you have on the subject would be appreciated
>
>Thanks,
>Eric Stroh
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