Find the inflection point(s) if it/they exists. If there is more than one, enter your answers in as ordered pairs separated by a comma. f(x) = x4 - 2x3Find the inflection point(s) if it/they exists. If there is more than one, enter your answers in as ordered pairs separated by a comma. f(x) = x3 - 6x2 - 135xFind the inflection point(s) if it/they exists. If there is more than one, enter your answers in as ordered pairs separated by a comma. f(x) = x3 - 3x2 - 144x - 140Find the absolute minimum (absminl or absolute maximum [absmax] of the function below if it exist. {TYPE 1':"OU R ANSWER IN AS A WHOLE NUMBER OR FRACTION AS AN ORDERED PAIRED USING A COMMA.I IF BOTH THE ABSOLUTE MINIMUM AND ABSOLUTE MAXIMUM EXIST, USE A COMMA TO SEPARATE THEM! DO NOT PLACE ANY UN-NECESSARY SPACES IN YOU R ANSWER!) For Example: obsm in ( 3 .1?) x) = 2x4 - x: [-1.1]