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Que.4 Do the following sums.(A) 1. Examine the given graph. a. State the domain of the function. b. Evaluate each of the following for the graph. i) lim x2+4x-2 x-+0 lim x2+4x-2 ii) X+0- x2 x2+4x-2 iii) lim x-+0 iv) f(0) c. is the graph contineous or discontineous ? justify your answer. 2. The height of a javelin tossed into the air is modelled by the function H(t) = 4.9t2+ 10t + 1, where H is height, in metres, and t is time, in seconds. a) Determine the rate of change of the height of the javelin at time t. Express the derivative using Leibniz notation. b) Determine the rate of change of the height of the javelin after 3 s