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Given: x = 10sin(0.2t), y = 10cos(0.2t), z = 2.5sin(0.2t) (1) There exists the following mathematical relationship: u = x'cos(z) + y'sin(z), v = -x'sin(z) + y'cos(z),...
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Why is the matrix P in Eq. 9 positive definite when condition 1 is satisfied? （See picture for details.） （concurrent learning，Persistently Exciting ）
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