For stable structures, one of the important properties of flexibility and stiffness matrices is that the elements on the main diagonal (i) Of a stiffness matrix must be positive (ii) Of a stiffness matrix must be negative (iii) Of a flexibility matrix must be positive (iv) Of a flexibility matrix must be negative The correct answer is (A) (i) and (iii) (B) (ii) and (iii) (C) (i) and (iv) (D) (ii) and (iv)

For stable structures, one of the important properties of flexibility and stiffness matrices is that
the elements on the main diagonal
 (i) Of a stiffness matrix must be positive
 (ii) Of a stiffness matrix must be negative
 (iii) Of a flexibility matrix must be positive
 (iv) Of a flexibility matrix must be negative
 The correct answer is
(A) (i) and (iii)
(B) (ii) and (iii)
(C) (i) and (iv)
(D) (ii) and (iv)
by

1 Answer

Answer :

(A) (i) and (iii)
by

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