Mr. Chung asked us to blog one of our homework on the blog,  which I think is totally unnecessary, to show my "creative" writhing on the blog and for everyone to see. anyway. here is my work on the following question : Page 72 #54,#56#58,#60,#62,#62. six question in total, right?

    If you see any mistake, it would be very helpful for you to kindly inform me and show me the correct method. Thank you and your action will be appreciated.

    Also , due the tectonically difficulties, some pictures are up-side down. so please cop and paste them into Word documents and read if you want to read about the details. sorry about the inconvenient.

    Here are the Answers :