*- This lConcept Check will be graded using the 10-point scale described in the syllabus. 0 To earn credit, you must show your work clearly and in detail, and you must use techniques from this week's material. it This must be your own work, and not that of another person or a problemsolving app. Please graph 2 periods of each of the following, including key points labelled on the vertical and horizontal axes. Note that each period has 5 key values to label. a) y : 3cos(2x) 1 b) y = 352::(2x) 1 You can use the information from your previous port "a\" to make this one easier. cl Does the function in part "b" have an amplitude? Explain why or why not. d) Write the Domain and Range for the function in part "b."