Recommended Posts

and it makes no sense. also consider the following:

x / y(z)

x / y * 1(z)

according to those "rules" they would result in different answers.

I typed in x/y(z) and x/y*(z) into my TI-89, as well as the original equation:

post-182672-0-01135700-1302421498.jpg

So even though it acknowledges a difference between y(z) and y*(z), it still evaluates the original equation as 288.

I think the real issue here is the actual interpretation of the ? symbol. In most graphing calculators or applications I've seen, the use of the division symbol ? is replaced by a /. The / implies an over-under relationship like post-182672-0-32179500-1302418975.png or post-182672-0-10643300-1302418982.png. I've never seen the use of a linearly-written equation with a ? symbol like the original equation in any college level math course, I believe it's just bad practice. The existence of this thread is evidence as to why. ;)

It's TI ScreenCapture, part of the TI Connect software suite. You can connect the calculator via USB and grab screenshots from it.

Ah, from Stetson's picture seems like it's for the TI-89, which explains why i haven't seen it before :p

and wow that really puts the tiny resolution of the calculator into perspective!

post-182672-0-32179500-1302418975.png or post-182672-0-10643300-1302418982.png

This.

Edit: Actually the divide symbol defines that 48 divided by 2(9+3) so the answer is 2.

To get 288, the equation needs to be written as 48?2*(9+3).

Further readings:

http://physicsforums.com/showthread.php?t=488334

http://forums.macrumors.com/showthread.php?t=1134025

Ah, from Stetson's picture seems like it's for the TI-89, which explains why i haven't seen it before :p

and wow that really puts the tiny resolution of the calculator into perspective!

As far as I know, it works with any TI calculator with USB or a link port as long as you have the right hardware to hook it up (I think you need the TI GraphLink for the older calculators).

And yeah, the resolution is hilariously tiny :laugh:

Yeah, a TI calculator with a nice high-res E-Ink screen would be killer :D

I totally agree. They have some fancy new color LCD & WiFi ones, but an E-Ink one would be incredible!

according to BODMAS (Bracket Operation Division Multiplication Addition Subtraction) rule which was taught to us in small classes

i read it as 48/2(9+3) = 48 divided by 2(9+3)

2(9+3) is operation and not multiplication , so it will be done first , giving ans 2

This.

Edit: Actually the divide symbol defines that 48 divided by 2(9+3) so the answer is 2.

To get 288, the equation needs to be written as 48?2*(9+3).

Further readings:

http://physicsforums.com/showthread.php?t=488334

http://forums.macrumors.com/showthread.php?t=1134025

wow, reading those links just gave me a new appreciation of how awful people are at math...

e.g. a bunch of people think that the particular mnemonic they were taught (BEDMAS, PEMDAS) has to be done in that exact order,

and some idiots on the second link even think that without the multiplication sign, the stuff in the brackets are powers (wtf?)

edit: and even assuming 9+3 is a power, how the hell did they get 2 as the answer?!

As far as I know, it works with any TI calculator with USB or a link port as long as you have the right hardware to hook it up (I think you need the TI GraphLink for the older calculators).

And yeah, the resolution is hilariously tiny :laugh:

I totally agree. They have some fancy new color LCD & WiFi ones, but an E-Ink one would be incredible!

too bad the fancy colour one still has abysmal resolution

48/2(9+3) = 48/2(a+b) = 48/(2a + 2b)

NOT 24(a+b)

The answer is 2 based on the distributive law of multiplication taking precedence. If you want to know how PEMDAS factors in, you can just say that the digit next to the parentheses directly acts on the elements within the parentheses and therefore it's factored in before the rest of the order of operations.

so..um as I mentioned earlier

first off i have not done mathematics in at least 6+ years. second what type of math depends. algebra, trigonometry, etc...

Edit: oops nevermind. i saw the divide sign as a plus.................... now it makes more sense. :laugh:

i was wondering why my answers were so different and were the divide sign came in...

Correct answer is:

48 / 2 * (9 + 3)

= 48 / 2 * 12

= 24 * 12

= 288

You cannot multiply 2 and 12 because 12 is not in the denominator. Do not make such incorrect assumptions just because of the way the expression is written.

Of course you could argue

48 / 2 (9 + 3)

48 / 2 (12)

48 / 24

2

Seen as obviously the 9+3 comes first, but should really still stay in the brackets, hence 2(12) should probably come first before 48 / 2?

Of course you could argue

48 / 2 (9 + 3)

48 / 2 (12)

48 / 24

2

Seen as obviously the 9+3 comes first, but should really still stay in the brackets, hence 2(12) should probably come first before 48 / 2?

No because the expression is not 48 / (2 (9 + 3)).

The expression is 48 / 2 (9 + 3). (9 + 3) is in the numerator. Like I said above, do not make incorrect assumptions. If the brackets are not there, they are NOT there.

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • EU needs the money, and the EUC lawyers dream at night about more of those huge commissions... Personally, if companies do things I don't like I don't purchase or use their products. I can think of few things worse than the horrid specter of government designed & "approved" software. But I guess things are different in the EU. I'd likely feel differently about this stuff if the lawyers did it pro bono, and the billion-dollar fines were rebated to the consumers the EUC claims it is protecting--but that never happens. The bizarre thing is that EU consumers seem unaware that all those fines come back to the companies forced to pay them in higher costs for the goods and services those companies sell them. Why that bit of logic escapes their attention is puzzling. So, now, we just sit back and wait on the next pretext the EUC lawyers come up with to rob these companies whose products no one in the EU is forced to buy and use in the first place. Rinse, repeat. It's become a very addictive habit of the EUC.
    • When companies do "opt-out" it's because they know that no one will opt-in...
    • the chip might be a binned 5090 so no, youre actually getting the 5090
    • How to set custom folder icons in Windows 11 File Explorer by Usama Jawad Although there are many third-party tools like Windhawk, FlyOOBE, DeskScapes 2026, and more that can be used to customize and tweak Windows 11 according to your preferences, many people often forget that the operating system natively offers a lot of configurability too. One such handy option is available inside File Explorer, where you can set custom folder icons to personalize your experience very quickly. File Explorer is an interface that Windows 11 users leverage rather heavily, so it can get quite boring looking at default icons. It can also be a bit tedious reading the text of each item to navigate to the folder you need. In cases like these, custom folder icons can come in quite handy as they allow you to not only personalize File Explorer, but also offer meaningful aesthetics that can make navigation quicker. Here is how to configure custom folder icons in Windows 11: Download icon files (.ico) from a third-party website of your choice. There are lots of free options online, like Icon Archive. You'll also be able to download them directly from Google Images Open File Explorer Navigate to the folder you want to customize Right-click the folder Select Properties Go to the Customize tab Select Change Icon If you want, you can select a native icon from the Windows directory, but for the purpose of this guide, we'll select the third-party .ico file that we downloaded. As such, select Browse Navigate to the .ico file and double-click it Click Apply, followed by OK That's all there is to it! It shouldn't take more than a minute after downloading the .ico file of your choice. The good news is also that you are not married to the icon you set; you can restore it to the default icon by simply selecting Restore Defaults in the interface mentioned in step 8. It's a very easy way to customize File Explorer, with any changes in this regard being quickly reversible. I would also recommend using View > Extra large icons in File Explorer so that you can properly enjoy the aesthetics. You can also download the entire Object Desktop package. Object Desktop includes programs such as Fences, Start11, Groupy, SoundPackager, DeskScapes and Multiplicity. Disclaimer: Neowin's relationship to Stardock
    • Teams on macOS has a major bug for some users, and Microsoft is rolling out guidance by Usama Jawad Teams is one of the most used online communication and collaboration tools especially in enterprise and school environments. It is available on a variety of platforms including Android, iOS, Windows, macOS, and the web. As such, it is a major problem when users on any of the aforementioned platforms get affected. In its Message Center advisory MC1392559, Microsoft acknowledged a bug impacting Teams customers on certain versions of macOS a few weeks ago. Basically, if affected users start sharing their screen, they'll see a black or blank screen, experience interruptions while sharing, and even face complete failure in screen sharing functionality. This is impacting customers using macOS versions older than Tahoe 26.4, and PCs which are resource-constrained on disk and memory. Interestingly, the scope of this issue appears to be limited as Microsoft has only listed Government Community Cloud (GCC), GCC High, and Department of Defense (DoD) as the affected platforms. Since it can be confusing to customers when the bug appears randomly and troubleshooting methods aren't always obvious, Microsoft is working on introducing some in-product guidance that automatically gets shown to users when a screen sharing failure is detected. They'll be asked to retry sharing their screen and will also be requested to update their macOS version, when applicable. If that is not possible, the Redmond tech giant has urged users to apply a mitigation that involves navigating to Teams Settings > General > Screen sharing > Use Mac OS native sharing. A restart isn't required. Regardless, Microsoft has recommended IT admins to inform their helpdesks about this issue, update their internal documentation, communicate the problem across the organization, and update macOS Tahoe 26.4 devices, where possible. The in-product guidance will begin rolling out later this month and should hopefully be available to all by mid-August.
  • Recent Achievements

    • One Month Later
      pahariyaseo earned a badge
      One Month Later
    • Week One Done
      pahariyaseo earned a badge
      Week One Done
    • Week One Done
      hadiaali45 earned a badge
      Week One Done
    • Week One Done
      arone_24 earned a badge
      Week One Done
    • Reacting Well
      flexorcist earned a badge
      Reacting Well
  • Popular Contributors

    1. 1
      +primortal
      414
    2. 2
      PsYcHoKiLLa
      143
    3. 3
      Nick H.
      89
    4. 4
      +Edouard
      82
    5. 5
      neufuse
      72
  • Tell a friend

    Love Neowin? Tell a friend!