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1.4 In each of the following find f(x th) - f(x) lim h-0 h (a) for) = -4; (b) f(x) = 3.; (c) f(x) - 3.2; (d) f(x) = v2-r; (e) f(x) = \\x - 1; (f) f(x) = 12 - r +1; (g) f(x) = 12