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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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#51 2013-07-22 01:19:04

EbenezerSon
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Re: Simplify the following:

Okay I would try and do thanks.

#52 2013-07-22 01:20:46

bobbym
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Re: Simplify the following:

Let me know how you do.

If you need it:


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#53 2013-07-22 02:03:38

EbenezerSon
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Re: Simplify the following:

I had: x^2-1/x^3 -2x^2 +x.

I dont understand  how you got -x^2 +1. As the numerator.

Please, let me know how you got it.
Thanks

Last edited by EbenezerSon (2013-07-22 07:28:37)

#54 2013-07-22 12:54:52

bobbym
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Re: Simplify the following:

Hi;

I did not get that as the numerator. I got x + 1 as the numerator. I just multiplied. Do you need help with that?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#55 2013-07-23 02:15:08

EbenezerSon
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Re: Simplify the following:

Yes,

#56 2013-07-23 02:17:49

bobbym
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Re: Simplify the following:

Do you know FOIL?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#57 2013-07-23 02:26:54

EbenezerSon
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Re: Simplify the following:

I havent heard nor seen that before.

#58 2013-07-23 02:29:03

bobbym
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Re: Simplify the following:

It is an acronym and it means First, Outer, Inner and Last. Want to try this one using it?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#59 2013-07-23 02:36:18

EbenezerSon
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Re: Simplify the following:

Yes, Sir.
I am ever ready!

#60 2013-07-23 02:47:00

bobbym
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Re: Simplify the following:

We have:



We use FOIL to multiply it.

F means First, so we take the first term of each one and multiply them.






What is the answer?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#61 2013-07-23 03:11:05

EbenezerSon
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Re: Simplify the following:

=x^2

#62 2013-07-23 03:16:27

bobbym
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Re: Simplify the following:

That is correct, hold on to that.

Now for O which means outer:





What do you get?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#63 2013-07-23 03:33:39

EbenezerSon
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Re: Simplify the following:

= -x^1

#64 2013-07-23 03:38:14

bobbym
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Re: Simplify the following:

That is correct, now hold on to that.

I, means inner:





What do you get?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#65 2013-07-23 03:50:02

EbenezerSon
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Re: Simplify the following:

=x^1

#66 2013-07-23 03:53:24

bobbym
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Re: Simplify the following:

That is correct a mundo!. Hold on to that.

We are almost done! L means last.





What do you get?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#67 2013-07-23 04:03:02

EbenezerSon
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Re: Simplify the following:

X^0 = 1.

#68 2013-07-23 04:07:11

bobbym
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Re: Simplify the following:

Wrong sign!


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#69 2013-07-23 04:15:56

EbenezerSon
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Re: Simplify the following:

Please, let me know I an wrong

#70 2013-07-23 04:18:31

bobbym
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Re: Simplify the following:



You added the exponents correctly but what about that - in front of the second term?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#71 2013-07-23 04:35:09

EbenezerSon
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Re: Simplify the following:

Errr okay, I see it should be -x^ 0= 1. Is that correct?

#72 2013-07-23 04:36:18

bobbym
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Re: Simplify the following:

Hi;

- x^0 = -1


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#73 2013-07-23 04:39:19

EbenezerSon
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Re: Simplify the following:

But sir, I think the negative sign is affecting the 'X' and not its power, please could you explain?

Last edited by EbenezerSon (2013-07-23 04:40:35)

#74 2013-07-23 04:41:29

bobbym
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Re: Simplify the following:

-(x^0) is - (1) which equals -1.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#75 2013-07-23 04:43:21

EbenezerSon
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Re: Simplify the following:

Errr okay, I understand it now,  any number raising to the power zero is 1 therefore the 1 should take the sign of the x, Because is the x that makes the 1. I am right sir?

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