- $$\frac{{{\text{W}}{l^3}}}{{48{\text{E}}I}}$$
- $$\frac{{{\text{W}}{{\text{a}}^2}{{\text{b}}^2}}}{{3{\text{E}}Il}}$$
- $$\frac{{{\text{Wa}}}}{{{\text{a}}\sqrt 3 {\text{E}}Il}} \times {\left( {{l^2} - {{\text{a}}^2}} \right)^{\frac{3}{2}}}$$
- $$\frac{{5{\text{W}}{l^3}}}{{384{\text{E}}I}}$$