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\(\begin{pmatrix} 1\\ 1 \end{pmatrix}\)working on another problem,don't know what does this stand for?or just tell me what is that.Thanks in advance.

Guest May 18, 2018

edited by
Guest
May 18, 2018

#1**+1 **

It is 1 C 1

It means how many ways can you **choose** one thing from one.

The answer is 1.

Melody May 18, 2018

#3**+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.))

Guest May 18, 2018