One typo in the textbook should be corrected before you do Section 7.1 #12.

The second transition in this question, "\delta(q1,b,1)={(q1, 11)}", should be changed to "\delta(q1, b, 1)= {(q2, 11)}".

make sure do the right problem after the typo fiexed

12. What language is accepted by the pda M= ({q0,91, q2,93, 74.95 }, {a, b}, {0, I, e),040,z, {45}), with (a,b, 1) q2, a, 1) I3, a, 1 {(qi , 11), =