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Metode Numerik 1 - Universitas Indonesia

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32S merupakan fungsi kuadratik dalama j(j = 0, …, m):N ⎛m ⎞ N ⎛ mj2 2j( a ,..., a ) = ⎜f(x ) − a x ⎟ = ⎜ ( a x + )∑∑∑ ∑S ...⎝⎠ ⎝20 m⎜ij i⎟ ⎜j if (xi)i= 1j=0i= 1 j=02+⎞⎟⎠∂S( a ,..., a )0∂akm= −2N∑⎛⎜f(xi)−⎝m∑i= 1j=0a xjji⎞⎟x⎠ki( k = 0,...,m)∂2S( a ,..., a )N0 m2k= 2 xi> 0∂a=2k∑i=1( k 0,...,m)S memiliki satu titik minimum pada nilaia j(j = 0, …, m) tertentu.

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