Hi everybody. I've been trying to solve some really huge matrix equations in matlab. But, every time, Matlab shows me, besides number and symbols, capital letter "I" or "PI" in a solution.
I need those equations later in other function for ODE45 solver. Ofcourse, ODE doesn't recognise "I" or "PI".
Here it is some sequance from the result:
1.0*(Kp3*x3 + Kv3*x6 + x11*(cos(- 2*x2 - 2/3*PI*(exp(-2*t^3) - 1)
I define Kp3, x3, Kv3 etc. as symbols, but I didn't mention anywhere "PI" or "I".
Does sombody know what is a problem here? And what should to avoide thise.
Thank you for helping me.