a, b, c, d ∈ R
find the minimum of a2+b2+c2+ac+bd
help me!! thanks
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Have you been taught multivariable calculus and Lagrange multipliers? There may be a simpler solution, but this a systematic approach for optimization problems.
I want to find a simpler way to solve this problem.
and I just realized that I mistyped the problem.
sorry, it should be "find the minimum of a2+b2+c2+d2+ac+bd".
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