Page of 9 - ZOOM + 9. Let g(r) = -1+2 a. What is the domain of g ? b. Use a sequence of values near a = -2 to estimate the value of lim, +-29(1), if you think the limit exists. If you think the limit doesn't exist, explain why. c. Use algebra to simplify the expression and hence work to evaluate lim, + 29(I) exactly, if it exists, or to explain how your work shows the limit fails to exist. Discuss how your findings compare to your results in (b). (Hint: jal = a whenever a 2 0, but lal = -a whenever a