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    can anybody help..... - Posted on 2007-03-13 19:07:24

bazzoka
750cc Boy Racer

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can anybody help me with this math problem...... x= 3+ln[y/1-y]........now im trying to make y the subject. so far ive gotto e^x-3= y/1-y the bit im struggling with is how to get y the subject or even y^2, so that i can complete the equation....any help here would be greatly appreciated. Ta.

 

 

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   can anybody help..... - Posted on 2007-03-13 20:34:42

vfor
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Y = (3 - In) divided by X

 

   can anybody help..... - Posted on 2007-03-13 20:44:16

catherine
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Surely if you are taking the (1-y/y) over to the left side, then it would remain 3+ln on the right, as that has not moved, so no need to change to 3-ln? Also, you cannot cancel the ys once you have switched them to the left, as the one on the top is a negative y, not a positive y...ie: (1-y/y), or am i talking through my arse!!!! lol

 

   can anybody help..... - Posted on 2007-03-13 20:50:28

bazzoka
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still confused as it is still left in the logarithmic form, with that way it dont make sense, it need to be converted into the index fomr first surely vfor? or am i barking up the wrong tree? in this equation ln is the natural log of [ydivide by 1-y]. ????

 

   can anybody help..... - Posted on 2007-03-13 20:53:42

catherine
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OMG....my head hurts!!!!!!

 

   can anybody help..... - Posted on 2007-03-13 20:58:33

Speedofile
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uhu!

 

   can anybody help..... - Posted on 2007-03-13 20:58:45

bazzoka
750cc Boy Racer 

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lol..how do you think i feel??lol....starting to do me nut in!lol

 

   can anybody help..... - Posted on 2007-03-13 21:00:18

Speedofile
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So glad I don't have problems like this in my life!! he he

 

   can anybody help..... - Posted on 2007-03-13 21:19:54

vfor
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Y ='S 5.19 ATTRIBUTE A VALUE TO X AND Y JUST TO SEE IF THE EQUASION WORKS

 

   can anybody help..... - Posted on 2007-03-13 21:21:35

Roeby
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dear god help me!!!!!!!!!!!

 

   can anybody help..... - Posted on 2007-03-13 21:22:49

vfor
1000cc Pro Racer 

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GIVE Y A VALUE OF 3

 

   can anybody help..... - Posted on 2007-03-13 21:25:28

Roeby
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u a maths teacher vfor?

 

   can anybody help..... - Posted on 2007-03-13 21:28:49

vfor
1000cc Pro Racer 

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no mechanical engineer

 

   can anybody help..... - Posted on 2007-03-13 21:31:03

catherine
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Anyway vfor, how the hell are you??!!

 

   can anybody help..... - Posted on 2007-03-13 21:30:40

vfor
1000cc Pro Racer 

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the calc I've used takes the IN as the inverse, if you put that into yer calculator you should be able to sort it, if its not the inverse then its done as a sim equation " i think"

 

   can anybody help..... - Posted on 2007-03-13 21:33:05

vfor
1000cc Pro Racer 

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fine thanks catherine and you? what you riding nowa days?

 

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