Then take the square root. Consider the pulse train example ... there is a propensity for spewing off numbers without thinking about what they mean. In this case, saying that an AC voltage ...

Reversing this gives \(\sqrt{4} = 2\). To find square roots or cube roots, work backwards from square numbers and cube numbers. If you know that \(15^2= 225\), then you also know that \(\sqrt{225} ...

Reversing this gives \(\sqrt{4} = 2\). To find square roots or cube roots, work backwards from square numbers and cube numbers. If you know that \(15^2 = 225\), then you also know that \(\sqrt{225} ...