How to solve a quadratic equation

被引:6
作者
Blinn, JF
机构
[1] Microsoft Research, Redmond, WA
关键词
D O I
10.1109/MCG.2005.134
中图分类号
TP31 [计算机软件];
学科分类号
081202 [计算机软件与理论]; 0835 [软件工程];
摘要
There are several problems in solving quadratic equations. Some of the more important ones are determining neater coefficients, numerics, and root ordering. Solving such problems requires the derivation of a homogeneous algorithm that uses the vector names instead of their values to emphasize the pattern. The [x1,w1] solution stays stable when B goes from positive to zero negative making sure that the [x1,w1] solution does not abruptly jump over to the other solution during transition. However, there is a jump via a homogenous scale when B passes zero and A = C , having good reason for picking one solution set over another. Finally, the two formulations for each of [x1,w1] and [x2,w2] are homogeneously equivalent; one is a scalar multiple of the other.
引用
收藏
页码:76 / 79
页数:4
相关论文
共 2 条
[1]
BLINN JF, 2003, NOTATION NOTATION NO
[2]
PRESS WH, 1988, NUMERICAL RECIPES C, P184