求解非齐次线性方程组.(如有负号,请使用英文下短负号) 解:增广矩阵,令x2=c1,x3=c2,则,因此,=++,(其中c1, c2是任意常数).这里,a1= ,a2= ,a3= ,a4= ,a5= ,a6= ,a7= ,a8= ,a9= ,a10= ,a11= ,a12= ,a13= ,a14= ,a15= ./ananas/latex/p/808292/ananas/latex/p/808294/ananas/latex/p/149/ananas/latex/p/808295/ananas/latex/p/149/ananas/latex/p/808296/ananas/latex/p/149/ananas/latex/p/808298/ananas/latex/p/808318/ananas/latex/p/808264/ananas/latex/p/808305/ananas/latex/p/808310/ananas/latex/p/808321
举一反三
- 已知a=(3,4),b=(5,12),a与b的夹角余弦为()/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149
- /ananas/latex/p/515893/ananas/latex/p/515894/ananas/latex/p/503271/ananas/latex/p/515901/ananas/latex/p/515902/ananas/latex/p/515907/ananas/latex/p/515908
- 已知()=0.4,则()=( )/ananas/latex/p/152/ananas/latex/p/278/ananas/latex/p/847/ananas/latex/p/281/ananas/latex/p/152/ananas/latex/p/4781/ananas/latex/p/7419/ananas/latex/p/6547
- A:平面,B:球面,C:旋转椭球面,D:椭球面,E:圆柱面,F:抛物柱面,G:椭圆柱面,H:旋转抛物面,I:圆锥面,J:椭圆锥面,K:马鞍面。则: (1)是____; (2)是______; (3)是______; (4)是______; (5)是______; (6)是______; (7)是______; (8)是______; (9)是______; (10)是______; (11)是______; (12)是______; (13)是______;/ananas/latex/p/1045101/ananas/latex/p/28097/ananas/latex/p/958152/ananas/latex/p/39419/ananas/latex/p/973515/ananas/latex/p/47030/ananas/latex/p/645788/ananas/latex/p/36944/ananas/latex/p/34552/ananas/latex/p/422334/ananas/latex/p/1045357/ananas/latex/p/36098/ananas/latex/p/596597
- 用主析取范式判断下列公式是否等值: (1)(pq)r与q(pr) (pq)r的主析取范式 q(pr)的主析取范式 是否等值 (填“是”或“否”) (2)┐(p∧q)与┐(p∨q) ┐(p∧q)的主析取范式 ┐(p∨q)的主析取范式 是否等值 (填“是”或“否”)/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149/ananas/latex/p/149