# Resonant frequency formula manipulation.

#### arthur92710

Joined Jun 25, 2007
307

If i know L F and Pi(its a blueberry pi) how do I find C?

#### hgmjr

Joined Jan 28, 2005
9,027
You have all of the variables in hand except the one you want to calculate. It should be a simple algebra problem from there.

hgmjr

#### arthur92710

Joined Jun 25, 2007
307
So would it be (f*2pi)^2 =1
.........................L ......=C

But how do i get rid of the 1 over the c?

Should i just use the reciprical of both side?

......L .....=..C
(f*2pi)^2

Right?

#### mozikluv

Joined Jan 22, 2004
1,435
am about to give you the correct formula, but i guess it won't help. why dont you put reasonable values on the original formula and work your way backwards and see if you get the correct values thru your reformulation.

#### hgmjr

Joined Jan 28, 2005
9,027
More like this:

$$C=\frac{1}{L(2\pi f)^{2}}$$

hgmjr

#### cheddy

Joined Oct 19, 2007
87
1/x=1/y

multiply both sides by x*y

x=y