List three reasons why a quasi-Newton (secant) search for the minimum of a function of one variable will fail to find a local minimum. If you carry out an exhaustive search (i.e., examine each grid...

List three reasons why a quasi-Newton (secant) search for the minimum of a function of one variable will fail to find a local minimum. If you carry out an exhaustive search (i.e., examine each grid point) for the optimum of a function of five variables, and each step is 1/20 of the interval for each variable, how many objective function calculations must be made?