Say $w^R $ is the reverse of $w$.
E.g.: $\epsilon^R = \epsilon$ and $(abbab)^R = babba$
Now say $L = \{ww^R | w \in L (a^*b^*)\}$
Draw the NDPA $M$ with $L(M) = M$
I understand NDPA's, however I don't understand how to derive this NDPA from the given information.
note: this is not homework, rather an exam-prep question.