System of 6 nonlinear differential equations solution in MATLAB code

I have a nonlinear differential equation system of 6 equations and 6 variables. I tried dsolve but it said that a solution can't be found. How can I solve them? I tried to build the system in Simulink and it solved the system but I need to solve it in matlab code as well.

Answer 1

[Star Strider]

See the documentation for ode45.