Question

I dont understand how to do this question!

Answer 1

Can anyone explain or show me how to do this type of question? Thanks!

Answer 2

Re-arrange the whole thing.
You have to find the value of 'a' in terms of all other variables.

\[f = \frac{kx}{(x^2 + a^2)}\]
\[(x^2 + a^2) = \frac{kx}{f}\]
\[a^2 = \frac{kx}{f} - x^2\]
\[a = \pm \sqrt{\frac{kx}{f} - x^2}\]

Understanding this? :)

Answer 3

Somewhat

Answer 4

so all you did was re-arrange it?

Answer 5

Yes.

Answer 6

what happened to x^2

Answer 7

a + x = b
a = b - x

It was taken to the other side.

Answer 8

Or you could say I subtracted x from both RHS and LHS.

Answer 9

ohh well you see my lessons dont make it obvious

Answer 10

ok well I"m gonna go with A.. thanks

Answer 11

You showed me how to do it so thank-you

Answer 12

You're welcome.