L= $$\left[\begin{matrix}2 & 0&0 \1 & -2&0\a & 1& 3\end{matrix}\right]$$
and
U = $$\left[\begin{matrix}1 & 4 & b \ 0 & -1 & 5\0 & 0 & c\end{matrix}\right]$$

(i) Determine all the value of a so that the (3,2) entry of LU is 7.

(ii) Determine all values of b and c so thtat the (2,3) entry of LU is 0.

Question

L= $$\left[\begin{matrix}2 & 0&0 \1 & -2&0\a & 1& 3\end{matrix}\right]$$
and
U = $$\left[\begin{matrix}1 & 4 & b \ 0 & -1 & 5\0 & 0 & c\end{matrix}\right]$$


(i) Determine all the value of a so that the (3,2) entry of LU is 7. 

(ii) Determine all values of b and c so thtat the (2,3) entry of LU is 0.

anonymous · Answer

how to find c? i found a=2, and b=10.
i can't find c....

anonymous · Answer

Why are you asking mathametical questions in a computer science group