The displacement field of a 3-D problem in millimeters is given by u=1−3x+6x2, v=xy−7x2, w=2−3x+4x. Find all components of strains at a point (2, 1).
a) Strain in x-direction = 18, Strain in y-direction = -9, Strain in z-direction = 4
b) Strain in x-direction = -6, Strain in y-direction = 14, Strain in z-direction = 5
c) Strain in x-direction = 9, Strain in y-direction = -14, Strain in z-direction = 1
d) Strain in x-direction = -5, Strain in y-direction = 18, Strain in z-direction = 2
