CHAPTE R 2 Functions and Their Applications

60 Business Mathematics A function f (x) defined over a convex set S is said to be convex function if for any two distinct points x1 and x 2 lying in S for any 0 ≤ λ ≤ 1, f {λ x1 + (1 – λ)x2} ≤ λ f (x1) + (1 – λ) f (x2). The graph of this function is given in Fig. 2.5. Inverse Function : If variables x and y are inter- dependent such that (i) y is the function of x; ................
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