# How to Calculate the Arc Length of x^1/2

1. Jun 29, 2011

### andryd9

So sorry if this has been discussed elsewhere before. I know it may be trivial but for some reason I just can't get it. I simply can't seem to integrate the square root of (1 + 1/4x). This problem has been highlighted for a reason, but I'm missing the point. Any input is much appreciated.

2. Jun 29, 2011

### micromass

Hi andryd9!

$$u=\sqrt{1+\frac{1}{4x}}$$

3. Jun 29, 2011

### micromass

Alternatively, you might want to calculate the arc length of x2. It should have the same value!

4. Jun 29, 2011

### andryd9

Thank you for the help:)