This is LaTeX code:
[latex]
+\frac{1}{4} \cdot \frac{\arctan{\frac{t-\frac{\sqrt{2}}{2}}{\frac{\sqrt{2}}{2}}}}{\frac{\sqrt{2}}{2}}+\frac{1}{4} \cdot \frac{\arctan{\frac{t+\frac{\sqrt{2}}{2}}{\frac{\sqrt{2}}{2}}}}{\frac{\sqrt{2}}{2}}+C=
[/latex]