# Transpose Formulae?

• Dec 11th 2008, 03:24 AM
Phoenix1985
Transpose Formulae?
I must have totally missed an entire module of this, leaving me rather dumfounded!!

Help!

1.) Y = 5x - 4 (X)

2.) E = mgh + ½mv² (H)

3.) E = mgh + ½mv² (V)

4.) E = mgh + ½mv² (M)

Apparently the letters in the brackets are the ones to "Isolate"

If anyone does help, could you please show me how to work them out for the future,

D x
• Dec 11th 2008, 03:30 AM
Prove It
Quote:

Originally Posted by Phoenix1985
I must have totally missed an entire module of this, leaving me rather dumfounded!!

Help!

1.) Y = 5x - 4 (X)

2.) E = mgh + ½mv² (H)

3.) E = mgh + ½mv² (V)

4.) E = mgh + ½mv² (M)

Apparently the letters in the brackets are the ones to "Isolate"

If anyone does help, could you please show me how to work them out for the future,

D x

All you're doing is treating all variables except the ones in brackets as constants. You're just rearranging the equations so that the variable in the brackets is the subject.

E.g.

3 [tex]E = mgh + \frac{1}{2}mv^2[tex] (v)...

$\displaystyle E - mgh = \frac{1}{2}mv^2$

$\displaystyle 2(E - mgh) = mv^2$

$\displaystyle \frac{2(E - mgh)}{m} = v^2$

$\displaystyle \sqrt{\frac{2(E - mgh)}{m}} = v$
• Dec 12th 2008, 12:25 AM
Phoenix1985
But its how you get there that confuses me, how come you divide certain aspects?

Any help with the other ones? (Thinking)