The equation should be
X n ( x ) = c 4 [ − sin λ n L + sinh λ n L cos λ n L + cos λ n L ( cos λ n x − cosh λ n x ) + ( sin λ n x − sinh λ n x ) ] {\displaystyle X_{n}(x)=c_{4}\left[-{\frac {\sin {\sqrt {\lambda _{n}}}L+\sinh {\sqrt {\lambda _{n}}}L}{\cos {\sqrt {\lambda _{n}}}L+\cos {\sqrt {\lambda _{n}}}L}}\left(\cos {\sqrt {\lambda _{n}}}x-\cosh {\sqrt {\lambda _{n}}}x\right)+\left(\sin {\sqrt {\lambda _{n}}}x-\sinh {\sqrt {\lambda _{n}}}x\right)\right]}
Return to errata.
![{\displaystyle X_{n}(x)=c_{4}\left[-{\frac {\sin {\sqrt {\lambda _{n}}}L+\sinh {\sqrt {\lambda _{n}}}L}{\cos {\sqrt {\lambda _{n}}}L+\cos {\sqrt {\lambda _{n}}}L}}\left(\cos {\sqrt {\lambda _{n}}}x-\cosh {\sqrt {\lambda _{n}}}x\right)+\left(\sin {\sqrt {\lambda _{n}}}x-\sinh {\sqrt {\lambda _{n}}}x\right)\right]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/d9d1defe930a16c85cc23df7976af6da58d90b1f)
