Summarize the pertinent information obtained by applying the graphing strategy and sketch the graph of y=f(x). f(x)=x2+416−x2 Question content area bottom Part 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The domain of f is enter your response here. (Type your answer in interval notation. Type an exact answer, using radicals as needed. Use a comma to separate answers as needed.) B. The domain of f is empty.