Problem 3 Let f(x,y,z)=−2x2−3y2−4z2+2xy+4yz. (a) Find the 3×3 symmetric matrix A such that f(x,y,z)=v⊤Av where v=⎣⎡xyz
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Problem 3 Let f(x,y,z)=−2x2−3y2−4z2+2xy+4yz. (a) Find the 3×3 symmetric matrix A such that f(x,y,z)=v⊤Av where v=⎣⎡xyz
Problem 3 Let f(x,y,z)=−2x2−3y2−4z2+2xy+4yz. (a) Find the 3×3 symmetric matrix A such that f(x,y,z)=v⊤Av where v=⎣⎡xyz⎦⎤. (b) Determine if A is positive-definite, negative-definite, or nonsingular indefinite.
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