I need to use piecewise functions as:
x(t)=A*t^(a) from t=t1 to t2 and x(t)=B*t^(b) from t=t2 to t3 have the initial value for the second piece (t=t2 to t3) set by the final value of the first part.
After that, I need to manipulate this function ie use linear combinations of the function and some of its derivatives.
How can I do that? I found no ''picewise'' paragraph in the help browser