Current location - Training Enrollment Network - Mathematics courses - Top Class of Mathematics in Senior One 5 1 Page Variant 2 (PEP). Number 53, number 9. Number 56, number 4. 6 1 8.66 12 detailed explanation
Top Class of Mathematics in Senior One 5 1 Page Variant 2 (PEP). Number 53, number 9. Number 56, number 4. 6 1 8.66 12 detailed explanation
( 1) f(-x)=-f(x)
2(a+b)x？ (This is a square) +2abx+2a=0
2(a+b)+2ab+2a=0
∴ a=b=0
No one else will,
Page 53, paragraph 9:
(1) Let the number of buyers be n and the price be x.