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Simultaneous eqns

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Simultaneous eqns

Post  Admin on Sat Oct 02, 2010 8:14 pm


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Re: Simultaneous eqns

Post  Margaret S on Mon Oct 04, 2010 3:55 am

Admin wrote:

Oh gosh, how do you even start this? Ofcourse you would have to start by making one thing the subject of the equation but how?
Any help to start me off? then maybe i'll be able to continue... =]

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Re: Simultaneous eqns

Post  n_zureikat on Mon Oct 04, 2010 5:43 am

Okay, I'm no sure, but I THINK that you treat the power of x-1 and 2y or whatever, as x and y, so just do the simultaneous equations normally.

Or, and I'm also not sure about this, reciprocal it?? And then multiply by the denominator to make it integers? I have no clue.

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Hint

Post  Admin on Mon Oct 04, 2010 5:54 pm

n_zureikat wrote:Okay, I'm no sure, but I THINK that you treat the power of x-1 and 2y or whatever, as x and y, so just do the simultaneous equations normally.

Or, and I'm also not sure about this, reciprocal it?? And then multiply by the denominator to make it integers? I have no clue.

Ok here's a hint. Think of the numbers 3 and 2 how can you simply the equation so they contain these numbers!

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Re: Simultaneous eqns

Post  Rawnaq on Tue Oct 05, 2010 4:18 am

Alright so i heres what i did.

I got both equations to have the same base numbers so i could deal with them, and i ended up with these new ones.


then i just used the indices rules to clean the equations up.


Then.. i don't know. Embarassed



WAIIIT! Idea
Did i get the second equation wrong.. if i get the 8 to be a 4..do i end up with this?


Yes? So now i can deal with


They have the same x values, but not the same base numbers..
URGH this is annoying.. am i on the right track? Crying or Very sad

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Re: Simultaneous eqns

Post  n_zureikat on Tue Oct 05, 2010 4:45 am

I've done it, but i'm not sure how to upload the picture?

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Re: Simultaneous eqns

Post  Rawnaq on Tue Oct 05, 2010 4:48 am

n_zureikat wrote:I've done it, but i'm not sure how to upload the picture?

download your image as a gif. to your desktop.
click on the 'host an image' icon on the tabs.
find your file.
upload
and copy and paste the 2nd link into here.
Then post Smile

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Re: Simultaneous eqns

Post  n_zureikat on Tue Oct 05, 2010 5:12 am

I did that, It's not working No
Let me try again

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Re: Simultaneous eqns

Post  Saad Elg on Tue Oct 05, 2010 6:33 am













so x = 3 , y = 1/2

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Re: Simultaneous eqns

Post  Margaret S on Tue Oct 05, 2010 6:36 am

Saad Elg wrote:











so x = 3 , y = 1/2
why couldnt you have waited a bit? -.- i was in the middle of solving it you...you...smart mathematical boy.

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Re: Simultaneous eqns

Post  Rawnaq on Tue Oct 05, 2010 6:38 am

Okayy see i got to where you simplified the powers.. then i didnt know what to do.

Thankk you Saaadd Wink

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Re: Simultaneous eqns

Post  Margaret S on Tue Oct 05, 2010 6:38 am

Margaret S wrote:
Saad Elg wrote:











so x = 3 , y = 1/2
why couldnt you have waited a bit? -.- i was in the middle of solving it you...you...smart mathematical boy.
Wait, i dont get how you multiplied the powers by two and 3 only on one side....

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Re: Simultaneous eqns

Post  Margaret S on Tue Oct 05, 2010 6:40 am

Margaret S wrote:
Margaret S wrote:
Saad Elg wrote:











so x = 3 , y = 1/2
why couldnt you have waited a bit? -.- i was in the middle of solving it you...you...smart mathematical boy.
Wait, i dont get how you multiplied the powers by two and 3 only on one side....


AAAA nvm, i got it..

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Re: Simultaneous eqns

Post  Margaret S on Tue Oct 05, 2010 6:44 am

Margaret S wrote:
Margaret S wrote:
Saad Elg wrote:











so x = 3 , y = 1/2
why couldnt you have waited a bit? -.- i was in the middle of solving it you...you...smart mathematical boy.
Wait, i dont get how you multiplied the powers by two and 3 only on one side....

Okay i understand everything going on. Rawnaq you just end up solving the powers simultaneously...
but i dont understand what you multiplied by 4 ....what did you multiply exactly to get your answer?

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Re: Simultaneous eqns

Post  Rawnaq on Tue Oct 05, 2010 6:45 am

Margaret S wrote:
Margaret S wrote:
Margaret S wrote:
Saad Elg wrote:











so x = 3 , y = 1/2
why couldnt you have waited a bit? -.- i was in the middle of solving it you...you...smart mathematical boy.
Wait, i dont get how you multiplied the powers by two and 3 only on one side....

Okay i understand everything going on. Rawnaq you just end up solving the powers simultaneously...
but i dont understand what you multiplied by 4 ....what did you multiply exactly to get your answer?

Lol, yes i realized that as soon as he posted it magdarite :p

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Re: Simultaneous eqns

Post  Margaret S on Tue Oct 05, 2010 6:48 am

[quote="Rawnaq"]
Margaret S wrote:
Margaret S wrote:
Margaret S wrote:
Saad Elg wrote:











so x = 3 , y = 1/2
why couldnt you have waited a bit? -.- i was in the middle of solving it you...you...smart mathematical boy.
Wait, i dont get how you multiplied the powers by two and 3 only on one side....



Lol, yes i realized that as soon as he posted it magdarite :p
Oh, right sorry. Razz God this is annoying me.....i need to solve this question. i dont get what he mutiplied by 4 to get hisss answerrr....any idea raw raw


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Re: Simultaneous eqns

Post  Rawnaq on Tue Oct 05, 2010 6:49 am

Lol, he multiplied by 4 to get rid of 4 as a denominator.

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Re: Simultaneous eqns

Post  Margaret S on Tue Oct 05, 2010 6:51 am

right, look its hard to explain this on the forum, ill explain and ask tomorrow -.-

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Re: Simultaneous eqns

Post  Saad Elg on Tue Oct 05, 2010 6:55 am




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Well done!

Post  Admin on Tue Oct 05, 2010 7:31 pm

Well done everybody! Saad not only showed his working but also checked his answers.

Here is another version of the working out:


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Re: Simultaneous eqns

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