Author Topic: Section 2.2 Question 3  (Read 357 times)

Qing Lyu

  • Jr. Member
  • **
  • Posts: 5
  • Karma: 0
    • View Profile
Section 2.2 Question 3
« on: September 24, 2020, 01:36:16 AM »
Hi, I have already got the final answer of this question. However, I don’t understand why the answer on the textbook saying that “also y = 0” after it says y is not equal to 0. And do we need to include any restrictions of y and x when solving this type of question?

Thanks in advance!

Victor Ivrii

  • Administrator
  • Elder Member
  • *****
  • Posts: 2563
  • Karma: 0
    • View Profile
    • Personal website of Victor Ivrii
Re: Section 2.2 Question 3
« Reply #1 on: September 24, 2020, 01:37:33 AM »
Because in addition to solutipons you found, there is another one, namelu $y=0$