The stiffness coefficient k11 for the beam as shown above is
1
\(EI\left(\frac{1}{a^3}+\frac{1}{b^3}\right)\)
2
\(2EI\left(\frac{1}{a^3}+\frac{1}{b^3}\right)\)
3
\(3EI\left(\frac{1}{a^3}+\frac{1}{b^3}\right)\)
4
\(4EI\left(\frac{1}{a^3}+\frac{1}{b^3}\right)\)