Linear Algebra,
https://www.dropbox.com/s/501o8y4ulh4py0g/Screenshot%202013-11-26%2011.37.09.jpg

Question

Linear Algebra,
https://www.dropbox.com/s/501o8y4ulh4py0g/Screenshot%202013-11-26%2011.37.09.jpg

christos · Answer

@agent0smith

christos · Answer

@ganeshie8

christos · Answer

@Hero

jack1 · Answer

u can upload pics here
there's an attach file button below

christos · Answer

Its too slow , so instead I upload at dropbox

christos · Answer

@jim_thompson5910

christos · Answer

@UnkleRhaukus

ganeshie8 · Answer

il give a hint : If u add elements of other rows to a row, the determinant will not change

christos · Answer

gane was right

anonymous · Answer

$$
Det\left(
\begin{array}{cc}
 a & b \
 c & d \
\end{array}
\right)= a d - bc

$$

anonymous · Answer

$$Det\left(
\begin{array}{cc}
 a+5c & b+5d \
 c & d \
\end{array}
\right)=(a+5 c)d - (b+5d) c= ad + 5 cd - bd -5 cd=ad -bc \= Det\left(
\begin{array}{cc}
 a & b \
 c & d \
\end{array}
\right)

$$

anonymous · Answer

The same is true for matrices at higher dimension. Can you guess the answer to your problem now?