Question

How to calculate the determinant of a 2X2 matrix in Rust

Answer 1

fn main() {
    let arr = [[3, 8], [4, 6]];

    /*
     *       a b
     * arr = 
     *       c d
     * 
     * determinant = a*d - b*c
     * 
     */

    let determinant = (arr[0][0] * arr[1][1]) - (arr[0][1] * arr[1][0]);

    println!("{}", determinant);
}


  
/*
run:

-14

*/

 

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