Hi you all! I must say YES, I'm student, and NO, this is not homework.
Function ilaplace doesn't work in computers of my university, and further I trully doubt my teacher know that it exists. But I like going beyond what I'm suppose to learn, and...
“Tell me and I forget, teach me and I may remember, involve me and I learn.”
― Benjamin Franklin
The function ilaplace gives a soltuion, which is not simplify, I'd thank a solution for this.
For an example code:
s=tf('s');
F_tf=5*(-1+1j)/(s+500j)+5*(-1-1j)/(s-500j);
F_tf=zpk(F_tf)
F_tf=tf(F_tf);
num=F_tf.num{1};
den=F_tf.den{1};
syms s t
F_sym=poly2sym(num,s)/poly2sym(den,s)
F_time=ilaplace(F_sym);
pretty(F_time)
The resault is of class sym:
F_time =
(655360000*4294967296000001^(1/2)*sin((4294967296000001^(1/2)*t)/131072))/4294967296000001 - 10*cos((4294967296000001^(1/2)*t)/131072)
This is what must be simplified. Operating throught Command Window, and no Editor as i wanted, it solves to
f(t)=10*sin(500t)-10*cos(500t)
