∫(1/((((l^2)+(x^2)))^(3/2)))\[DifferentialD]x

∫(1/(((y^2)+(z^2)) (Sqrt[((a^2)/4)+(y^2)+(z^2)])))\[DifferentialD]y

TeXForm[((2 ArcTan[((a y)/(2 z (Sqrt[((a^2)/4)+(y^2)+(z^2)])))])/(a z))]

((∂(tan^(-1))((n/(4 (Sqrt[(n/2)+1])))))/(∂n))

Simplify[(((1/(4 (Sqrt[1+(n/2)])))-(n/(16 (((1+(n/2)))^(3/2)))))/(1+((n^2)/(16 (1+(n/2))))))]

TeXForm[((Sqrt[2])/((Sqrt[2+n]) (4+n)))]