Negative semidefinite matrix

negative ['nɛɡətɪv]

adj. 消极的，否认的;[数]负的;[心]反抗性的;无预期结果的; n. 否定词语;否定的观点;消极性;[摄]底片; vt. 否定;拒绝;

negat否认+ive形容词后缀 → 否认的；n. 底片

semidefinite

[计] 半定的

matrix ['metrɪks]

n. <数>矩阵;模型;基质;母体，子宫;

matri(mother)+x(名词后缀)→子宫；母体；铸型；模型；母岩

What'd you have in mind?

你心里有什么打算？

Hmm, I love the perfume.

哼，我很喜欢香水。

I want to ask you for your advice. When I leave school, I want to be an engineer. For years I have been interested in engineering. I have made tools at home and have written articles for magazines. My father says that engineering is not a suitable subject

我希望得到您的指点。中学毕业后，我希望成为一名工程师。多年来，我一直对这个方面感兴趣。我在家制作各种用具，给杂志写文章。我的父亲说工程学不适合女孩子学。他要我学习地理。可是我对这门学科一点也不感兴趣。我尝试阅读有关这方面的书籍，然而，我感到索然无味。我该?2283