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Which of these is true for the LU decomposition method?

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Which of these is true for the LU decomposition method?

(a) LΦ=Ub

(b) LUΦ=b

(c) Φ=LUb

(d) UΦ=Lb
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The correct answer is (b) LUΦ=b

Best explanation: For the LU decomposition method,

A=LU

Where L and U stand for Lower and Upper triangular matrices respectively.

Substituting in the global matrix,

LUΦ=b.
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