Current location - Training Enrollment Network - Mathematics courses - 20 12 9th grade of national mathematics league: if a~2+b~2= 1, the minimum value of a~4+ab+b~4 is
20 12 9th grade of national mathematics league: if a~2+b~2= 1, the minimum value of a~4+ab+b~4 is
Because a-2+b-2= 1, a=5-b,

From A-4+AB+B-4 = (A-2+B-2)+AB-4 =1+AB-4.

Get b(5-b)-3=-b squared +5b-3.

The square of formula -(b-2/5) is+13/4.

So when b=2/5, the maximum value is 13/4.

Related articles
  • Which legendary skin is the best in the glory of the king?
  • 20 13 average score of Anhui mathematics college entrance examination
  • Where does tofu come from?
  • What is ex equal to?
  • Problems and improvement measures in mathematics teaching in primary schools
  • What is the interview scope of high school mathematics teaching resources?
  • What is the application of classified discussion in mathematical thought in life?
  • Senior three math problems (detailed answers)
  • The founder of abstract mathematics
  • The math teacher gave it to me.

    • copyright 2024 Training Enrollment Network All rights reserved