Johnny5 Posted March 10, 2005 Share Posted March 10, 2005 Is there a way to use latex to make a matrix? And for that matter a determinant? Thank you Link to comment Share on other sites More sharing options...
matt grime Posted March 11, 2005 Share Posted March 11, 2005 inside the latex math environment \left( \begin{array}{ccc} entry & entry &entry \\ entry & entry &entry \\ \end{array} \right) would make a 3 column matrix with entries centred on in the column, Vary the 3 c's to make more columns. separate entries with & and \\ is a newline. ie the above would make a 2 row matrix. the command \left<symbol> makes a left bracket as big as the matrix. you can try varying <symbol>, to say, | to get a determinant. Link to comment Share on other sites More sharing options...
Johnny5 Posted March 11, 2005 Author Share Posted March 11, 2005 inside the latex math environment \left( \begin{array}{ccc} entry & entry &entry \\ entry & entry &entry \\ \end{array} \right) would make a 3 column matrix with entries centred on in the column' date=' Vary the 3 c's to make more columns. separate entries with & and \\ is a newline. ie the above would make a 2 row matrix. the command \left<symbol> makes a left bracket as big as the matrix. you can try varying <symbol>, to say, | to get a determinant.[/quote'] Here goes... [math] A = \left( \begin{array}{cccc} A_{11} \ A_{12} \ A_{13} \ A_{14}\\ A_{21} \ A_{22} \ A_{23} \ A_{24}\\ A_{31} \ A_{32} \ A_{33} \ A_{34}\\ \end{array} \right) [/math] [math] A \times B = \left| \begin{array}{ccc} \hat i \ \ \ \hat j \ \ \ \hat k \ \ \\ A_x \ A_y \ A_z \ \\ B_x \ B_y \ B_z \ \\ \end{array} \right| [/math] Thank you Matt, I had a little trouble trying to center i^ j^ k^ in their respective colums, I know the backslash inserts a space, is there a better way to do that? Link to comment Share on other sites More sharing options...
stevem Posted March 11, 2005 Share Posted March 11, 2005 As Matt said separate entries with & and you will find that the entries will be aligned - in this case in the centre because of the c in \begin{array}{cccc} Unfortunately there's a bug in the [math]\LaTeX[/math] implementation on the forum so it shows wrongly in [math]A \times B = \left| \begin{array}{ccc} \hat i & \hat j & \hat k \\ A_x & A_y & A_z \\ B_x & B_y & B_z \\ \end{array} \right| [/math] but in normal [math]\LaTeX[/math] use it will do what you wanted. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now