description please solve the following problems from related chapters

Description Please solve the following problems from related chapters:

Part – 1

Chapters 12 – Problems – 12.7,12.12 &12.13

Part – 2

chapters 11 problems # 11.7, 11.8, 11.9, 11.10,11.11 & 11.12

Kindly find the attached file Question and book