- #1
jubej
- 6
- 0
Im going crazy here please help me, i have tried to solve this but i don't know where to start.
1) Solve the following matrix equeations for a,b,c and d.
[tex]\left[\begin{array}{cc}a-b & b+c \\ 3d+c & 2a-4d\end{array}\right][/tex] = [tex]\left[\begin{array}{cc}8 & 1 \\ 7 & 6\end{array}\right][/tex]
this is another separate problem:
2)
a) show that if ad-bc [tex]\neq[/tex] 0, then the reduced row- echelon form of
[tex]\left[\begin{array}{cc}a & b \\ c & d\end{array}\right][/tex] is [tex]\left[\begin{array}{cc}1 & 0 \\ 0 & 1\end{array}\right][/tex]
b) Use part a) to show that the system
ax+by = k
cx+dy = l
has exactly one solution when ad-bc [tex]\neq[/tex] 0
thnx for any help i have started elementary algebra and everyone its in chapter 5 in the book and I am in the 1 chapter, but don't want to give up. the book of the course its
Elemtary linear algebra by Howard Anton and Chris Rorres. i don't know if its a good book. but i try to understand it, do you have any other suggestion of a great book for people like me...noob :(
1) Solve the following matrix equeations for a,b,c and d.
[tex]\left[\begin{array}{cc}a-b & b+c \\ 3d+c & 2a-4d\end{array}\right][/tex] = [tex]\left[\begin{array}{cc}8 & 1 \\ 7 & 6\end{array}\right][/tex]
this is another separate problem:
2)
a) show that if ad-bc [tex]\neq[/tex] 0, then the reduced row- echelon form of
[tex]\left[\begin{array}{cc}a & b \\ c & d\end{array}\right][/tex] is [tex]\left[\begin{array}{cc}1 & 0 \\ 0 & 1\end{array}\right][/tex]
b) Use part a) to show that the system
ax+by = k
cx+dy = l
has exactly one solution when ad-bc [tex]\neq[/tex] 0
thnx for any help i have started elementary algebra and everyone its in chapter 5 in the book and I am in the 1 chapter, but don't want to give up. the book of the course its
Elemtary linear algebra by Howard Anton and Chris Rorres. i don't know if its a good book. but i try to understand it, do you have any other suggestion of a great book for people like me...noob :(