(i) The function f is defined by f: IR → R/{-1} , x-1 „**-1 and hf (x) = 2x – 3. x+1 (a) Find h(x). (b) Show that f is bijective. (ii) Prove by contradiction that 5 is irrational.

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Statements and Logic

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