i want simulink model $($blocks$)$ for this $2$ equations in matlab but dont derived it

and scope for theta$1$ and theta $2$

Next we need to use a computer algebra program to solve equations $(13)$ and $(16)$ for ${}_1^{\text{'}\text{'}},{}_2^{\text{'}\text{'}}$ in terms of ${}_1,{}_1^{\text{'}},{}_2,{}_2^{\text{'}}.$ Note that we also include the definitions given by equations $(1-4),$ so that we have $2$ equations $(13,16)$ and $2$ unknowns $({}_1^{\text{'}\text{'}},{}_2^{\text{'}\text{'}}).$ The result is somewhat complicated, but is easy enough to program into the computer.

${}_1^{\text{'}\text{'}}=\frac{-g(2m_1+m_2)sin{}_1-m_{2}gsin({}_1-2{}_2)-2sin({}_1-{}_2)m_e({}_2^{\text{'}2}{L}_2+{}_1^{\text{'}2}{L}_{1}cos({}_1-{}_2))}{L_1(2m_1+m_2-m_{2}cos(2{}_1-2{}_2))}$

${}_2^{\text{'}\text{'}}=\frac{2sin({}_1-{}_2)({}_1^2{L}_1(m_1+m_k)+g(m_4+m_k)cos{}_1+{}_2^{\text{'}2}{L}_2{m}_{e}cos({}_1-{}_2))}{L_2(2m_L+m_2-m_{2}cos(2{}_1-2{}_2))}$

These are the equations of motion for the double pendulum.