# Recent questions in Linear Algebra - Mathematics

## 1

Answers#### By using the mathod of triangle

U+V+W=23U+3V-W=6U-V+W=1

05/03/2017
## 0

Answers#### Linear Algebra: Vectors

Show that |a+b|^2 + |a-b|^2 = 2|a|^2 +|b|^2

05/03/2017
## 0

Answers#### Linear Algebra: Vectors

Show that |a+b|^2 + |a-b|^2 = 2|a|^2 +|b|^2

05/03/2017
## 3

Answers#### Problem from group theory

in a group G, e is the identity .x,y belongs to G such that (x^5)(y^3)=(x^8)(y^5)=e. which one true a)x=e but y not = eb)x=y=ec)x not= e and y not= e

07/02/2015