Question: Consider the function f(x)=12x530x4-160x37.f(x) has inflection points at (reading from left to right)x=D,E, and F where D is and E is and F is For

Consider the function f(x)=12x530x4-160x37.f(x) has inflection points at (reading from left to right)x=D,E, and F where D is and E is and F is For each of the following intervals, tell whether f(z) is concave up (type in CU) or concave down (type in CD).(-,D][D,E]:[E,F]:[F,):

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