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What is a banded matrix?

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+2 votes
in Finite Element Method by (110k points)
What is a banded matrix?

(a) Sparse matrix

(b) Rectangular matrix

(c) Unit matrix

(d) Square matrix

I had been asked this question by my school teacher while I was bunking the class.

My question is from Assembly of Global Stiffness Matrix for the Banded & Skyline Solutions topic in section Trusses of Finite Element Method

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+2 votes
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Best answer
Right option is (a) Sparse matrix

The best I can explain: In matrix theory band matrix is a sparse matrix, whose non-zero entities are confined to a diagonal band. Comprising the main diagonal and zero are more diagonals on either side.

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