Recent content by Reeses

  1. R

    How Does Scaling a Column Affect the Determinant of a Matrix?

    If the determinant of a 3x3 matrix A is det(A)=5, and the matrix B is obtained from A by multiplying the first column by 8, then det(B)=? I really haven't tried anything for this question; I'm not even sure where to start.
  2. R

    Equidistant Points from P & Q in 3D Space

    Let P=(–5,7,6) and Q=(–6,–4,2). The set of all points that are equidistant from P and Q has the equation=?