User:Eml5526.s11.team7.jb



\displaystyle

\mathbf{K^{(1)}_{FE}} = \left\{ {\mathbf{K^{(1)}_{0j}};j = 1,...,n} \right\} =

$$i



\displaystyle

\tilde k({b_0},{b_1}) = \int\limits_0^1 {b{'_0}{a_2}b{'_1}dx} = \int\limits_0^1 {b{'_0}(2+3x)b{'_1}dx}  = 0 = \tilde k({b_0},{b_2}) = \tilde k({b_0},{b_3}) = 0

$$



\displaystyle

\therefore {K_{EF}} = \left[ {\begin{array}{ccccccccccccccc} 0 \\  0 \\   . \\ .\\ . \end{array}} \right]

$$

And：

\displaystyle

\because {K_{FE}} = {K_{EF}}^T = \left[ {\begin{array}{ccccccccccccccc} 0 \\  0 \\   . \\ .\\ . \end{array}} \right]

$$