This can be integrated by separating the integral. The <math>\phi</math> integral gives <math>2 \pi</math> and the <math>r</math> integral gives <math>\text{1}</math>. This means the initial integral, <math>I</math> is <math>\sqrt{2 \pi}</math>. | This can be integrated by separating the integral. The <math>\phi</math> integral gives <math>2 \pi</math> and the <math>r</math> integral gives <math>\text{1}</math>. This means the initial integral, <math>I</math> is <math>\sqrt{2 \pi}</math>. |