\(\begin{pmatrix} 1\\ 1 \end{pmatrix}\)working on another problem,don't know what does this stand for?or just tell me what is that.Thanks in advance.
It is 1 C 1
It means how many ways can you choose one thing from one.
The answer is 1.
I guess this stand for a vector.The problem I am doing is find the general solution to the system of equations.
dx/dt=x+2y
dy/dt=y+2x
It was a multiple choice question,and one of the anwsers is
\(X=c1*\begin{pmatrix} 1\\ -1 \end{pmatrix}{e}^{3t}+c2\begin{pmatrix} -1\\ 3 \end{pmatrix}{e}^{-t}\)
What do you think is it now?
(You dont have to help me solve the system of equations.It is one of my exam problem.(You can do it after I get the anwser if you want.))