Suppose that 1(a) =. net + Em. (A) Find all critical values of f. If there are no critical values, enter the word "none". If there are more than one, enter them separated by commas. Critical valuets) = D (B) Use interval notation to indicate where at) is increasing. Note: When using Interval notation in WeBWorK, you use INF for 00, INF for ool and U for the union symbol. If there no intervals oi increasung or decreasing then enter "none". Increasing: U (C) Use interval notation to Indicate where f(m) is decreasing. Decreasing.- D {D} Find the zcoordinates of all relative maxima of f. If there are no relative maxima, enter "none". If there are more than one, enter them separated by commas. Relative maxima at :r: = D (E) Find the x-coordinates of all relative minima of f. If there are no relative minima, enter "none". If there are more than one, enter them separated by commas. Relative minima at m = D (F) Use interval notation to indicate where re) is concave up. Concave up: D (G) Use interval notation to indicate where x) is concave down. Concave down: [3 (H) Find all inflection points of f. if there are no Inflection points. enter "none". separated by commas. lnflection point(s} at :i: = E] If there are more than one, enter them