This question is designed to be answered with a calculator. Use the four functions shown. L y=5X ||. y=|5X| |||. Fm IV. y=(5)()'1 Which functions are non-differentiable at X = 5? II and Ill only Ill and IV only I, II, and Ill only II, III, and IV only This question is designed to be answered without a Which graph could represent f? calculator. 5; Use this table that gives the signs of f ' and f " over certain intervals for a function f.