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anonymous

  • one year ago

which is the proper way to type my answer using parentheses? I have to type my answers as (a-bi)/c or (a+bi)/c. Thanks. the answer is 4i-1 - ------ 2 (with the minus sign before the fraction) would I type -(1+4i)/2 or (1+4i)/2 or something totally different? Thanks!!

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  1. SolomonZelman
    • one year ago
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    -(4i-1)/2 is equivalent to \(\large\color{slate}{\displaystyle-\frac{4i-1}{2}}\) if that is what you are asking

  2. anonymous
    • one year ago
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    yes, but moving it to a-bi form... I lost points on my previous answers with format, so I want to make sure I get the format and the signs correct this time.

  3. anonymous
    • one year ago
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    does the -( ) stay outside the () and it becomes -(-1+4i) or does it distribute and become (1-4i) ? Does that make sense?

  4. SolomonZelman
    • one year ago
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    for example: -(ci-d)/2 (-ci+d)/2 (d-ci)/2 (d/2) - (c/2)i

  5. SolomonZelman
    • one year ago
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    do you want to know how to put the parenthesis and this is better, or should I post it in latex or draw it?

  6. SolomonZelman
    • one year ago
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    that is a+bi or a-bi form

  7. SolomonZelman
    • one year ago
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    It seems as though you are lost....

  8. SolomonZelman
    • one year ago
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    (with my explanation I wouldn't get surprised)

  9. anonymous
    • one year ago
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    not really. I solved (3+5i)/(-2+2i), got -(4i-1)/2 answer, but lost points on format. Is there a "more correct" way to format the answer? Personally, I think either would be good, but my teacher seems to disagree. :)

  10. SolomonZelman
    • one year ago
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    you are entering the answer just using what your keyboard has to offer without attachments, pictures and such. This is why you have a problem, because you sometimes fail to correctly put the answer that you actually had in mind. Is that right?

  11. anonymous
    • one year ago
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    yes! only the keyboard :(

  12. anonymous
    • one year ago
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    i have no way to attach it written for this problem, with my work. It's just the answer.

  13. SolomonZelman
    • one year ago
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    In my college email I use latex pictures if I want to communicate with my professor. (Any latex converter suffices. Then convert it to an image...) but I guess we would HAVE TO comprehend the parenthesis spaces and everything

  14. SolomonZelman
    • one year ago
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    I might not be able to perfectly teach you right now, but you know what?

  15. SolomonZelman
    • one year ago
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    http://www.wolframalpha.com/ enter your input in here (all your parenthesis and etc.) and wolfram is going to give you what you wrote an interpretation

  16. anonymous
    • one year ago
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    This is an online HS course :) I prefer the assignments I can use Word equations or take a photo of my work for. I'm betting it doesn't really matter the format :) Thanks! I'll give it a try.

  17. SolomonZelman
    • one year ago
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    For example: when I enter (d/2) - (c/2)i I will use wolfram to see what it would show. http://www.wolframalpha.com/input/?i=%28d%2F2%29+-+%28c%2F2%29i it just interpreted my input (under "Input")

  18. anonymous
    • one year ago
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    it gave me 1/2 -2i ?

  19. SolomonZelman
    • one year ago
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    that means that -(4i-1)/2 is correct

  20. SolomonZelman
    • one year ago
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    |dw:1435030403997:dw|

  21. SolomonZelman
    • one year ago
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    and the way to check this, if it is same or not, is as follows: http://www.wolframalpha.com/input/?i=+%283%2B5i%29%2F%28-2%2B2i%29%3D-%284i-1%29%2F2%3D%281%2F2%29-2i look at what I entered and the interpretation it gave.

  22. SolomonZelman
    • one year ago
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    (and the result "True" confirms that)

  23. anonymous
    • one year ago
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    OK. I get that! I'm thinking since my teacher requires a-bi format, I should write it as 1/2-2i instead of -(4i-1)/2 ... ? I understand it all, I just hate losing points due to a -; when all the answers are essentially the same :) !!! I lost points with the 4i being written first on previous problems.

  24. SolomonZelman
    • one year ago
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    when you are missing the minus your result is the exact opposite. Although it is "exact" opposite (like everything besides -) it is still the exact "opposite" (the answer is wrong).

  25. anonymous
    • one year ago
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    I meant whether it was -(4i-1) or (1+4i) not that the negative sign wasn't there. :)

  26. anonymous
    • one year ago
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    Thanks for your help! I submitted. We'll see if I get it marked correct.

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