a) K=\(\frac{2EI}{l}\)
b) K=\(\frac{2EI}{l}\begin{bmatrix}2 & 1 \\ 1 & 2 \end{bmatrix}\)
c) K=\(\frac{2E}{l}\begin{bmatrix}2 \\ 1 \end{bmatrix}\)
d) K=\(\frac{2E}{l}\begin{bmatrix}1 & 1 \\ 1 & 1 \end{bmatrix}\)
Answer: b
Explanation: Element stiffness matrix means it is a matrix method that makes use of the members stiffness relations for computing member forces and displacements in the structures.
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