- (Y+1) = (1/3)Y { [(4/3)Y]+1

2009-09-25 1:37 am
請再解答以下算式,謝謝!
- (Y+1) = (1/3)Y { [(4/3)Y]+1 }

回答 (1)

2009-09-25 3:48 am
✔ 最佳答案

- (Y+1) = (1/3)Y { [(4/3)Y]+1 }
- (Y+1) = (4/9)(Y^2) + (1/3)Y
(4/9)(Y^2) + (4/3)Y + 1 = 0
4Y^2 + 12Y + 9 = 0
(2Y + 3)^2 = 0
2Y + 3 = 0
Y = -3/2




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