( for full credit show all work/ justify all responses) Pg 4 Evaluate each of the following limits or explain why it does not exist. Lim (1/(x2+1)) x - 1 Lim ((x+ -x)/x) x - 0(For full credit show all work and justify all responses) The questions on this page refer to the graph of y = f' (x) shown below. Name an interval on which f(x) is concave down. Name an interval for which f(x) is decreasing. Is f(x) increasing, decreasing, or neither when x = -3