Question

If 4 - x2 = g(x) = 4cosx for all x, find
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Answer 1

Answer:

Step-by-step explanation:

lim(4 - x^2) = lim 4cos x = 4 as x tends to 0, and since

4 - x^2 <= g(x) <= 4cos x, then according to the sandwich theorem

lim g(x) as x tends to 0 is 4.