help witha 2nd transpose plz

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April 2nd 2010, 06:25 AM
matlondon

help witha 2nd transpose plz

http://img225.imageshack.us/img225/7250/helpmaths3.png
help with this he coverted i pointed it out. can some one explain please.

thx you(Happy)
April 2nd 2010, 06:53 AM
masters

Hi matlondon,

The third line is like ${\color{red}a}b+{\color{red}a}$

Just factor out the a, and you get a(b+1).

Do you see it?

${\color{red}x_2^{\frac{1}{2}}}\left[\frac{w_2}{w_1}\right]+{\color{red}x_2^{\frac{1}{2}}}$

${\color{red}x_2^{\frac{1}{2}}}\left(\frac{w_2}{w_1 }+{\color{red}1}\right)$
April 2nd 2010, 07:35 AM
matlondon

Quote:

Originally Posted by masters

Hi matlondon,

The third line is like ${\color{red}a}b+{\color{red}a}$

Just factor out the a, and you get a(b+1).

Do you see it?

${\color{red}x_2^{\frac{1}{2}}}\left[\frac{w_2}{w_1}\right]+{\color{red}x_2^{\frac{1}{2}}}$

${\color{red}x_2^{\frac{1}{2}}}\left(\frac{w_2}{w_1 }+{\color{red}1}\right)$

yep i see that bit now, but how do you get w1+w2/w1 is the bit i fail to understand
April 2nd 2010, 12:54 PM
masters

Quote:

Originally Posted by matlondon

yep i see that bit now, but how do you get w1+w2/w1 is the bit i fail to understand

I'll use a simpler example

$\frac{a}{b}+1=\frac{a}{b}+\frac{b}{b}=\frac{a+b}{b }$

You see, you have to use the common denominator and make the 1 into the fraction $\frac{b}{b}$

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