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For a four noded quadrilateral, we define shape functions on _____

a) X direction
b) Y direction
c) Load vector
d) Master element

Answer: d
Explanation: Master Element (ME) is the main point of reference in our analysis. The ME represents the person itself, and it gives us a primary layer of our personality. To determine the quality of ME, and overall chart, we have to analyze what kind of connection and access ME has to other Elements. The shape function is the function which interpolates the solution between the discrete values obtained at the mesh nodes.

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