let Q(x)= x12 -8x1x2 -5x22 , then matrix A of the quadratic from is A=?

(b) Find a real symmetric matrix C of the quadratic form: Q(x1,x2,x3) = xỉ +4x3+6x3 +2x1x2 +x2x3+3x1x3. %3D

Let A be an m x n matrix and let b and c be column vectors with n components. Express the dot product (Ab) * (Ac) as a product of matrices.

and Write the solution to the linear [z(t)] = C₁ --( C1 X + C₂ - A₁ = FI X system A in the following forms. LY In eigenvalue/eigenvector form, but make sure to write it as real functions (with the sines and cosines): = −3+4i with ₁ 1₂ = -3-4i with 2 = = = - - H [11] + → A ← J