4. for the function defined by: f(x)={x^2 x< =1}
{2x+1 x> 1} part i: evaluate f(0).
a. identify the function that will be used when x = 0.
b. find the value of this function when x= 0. part 2: graph f(x). a. graph the first function completely. b. on the same graph you used to answer part (a), graph the second function completely. c. identify the value of x at which the function changed. remove the parts of each line that are not included in domain of the corresponding function. d. place open and close circles appropriately on the ends of each line to complete the function.