Let b₁=(1,1,0)ᵗ , b2=(1,0,1)ᵗ and b3=(0,1,1)ᵗ, and let L be the linear transformation from R² into R³ defined by L(x) = x1 b1 + x2 b2 + (x1 + x2) b3
Find the matrix A representing L with respect to the ordered bases {el, e2} and {b1, b2, b3}.