3.10 There is a relation R123. R123 X, x X2 × X3 = 0.9 / (x, a, α) + 0.4 / (x, a) Determine R12 X ×x, and R23 X2 × X3 by projection. b) Obtain R123 by cylindrical extension of R12 and R23. c) Obtain R1 234-X, x X2 x X3 x X; by cylindrical extension where X4 lp,q)

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.