. Changes in concavity can occur only at points of inection. Is this statement true or false? Explain . Describe the domain of the function f (x) = i x1 . Explain the conditions under which a rational function would have no vertical asymptotes. . Explain how symmetry can be used to help analyze functions. . Describe some strategies you can use to approach a curve-sketching problem . Finding where derivative of a mction equals zero will always produce the desired optimal value. Is this statement true or false? Explain your reasoning . If x represents the size of a piece increase, what is the meaning of x = -5