Calculation of Indefinite Integral.

Keyword Physics Formulas,Indefinite Integral,Arctangent function.

Reference [1]：オーム社編：『機械工学公式集』,オーム社,pp.27,1960.

Remarks ・LaTeX： \int \frac{1}{a^{2}+x^{2}}dx=\frac{1}{a}\tan^{-1}\frac{x}{a}+C ・Making above Equation Image is powered by CODECOGS

History ・2010/03/15：Upload.