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For the function y = -4x^3 + 1/2x^4 + 150 : a. write down the formula...

For the function y = -4x^3 + 1/2x^4 + 150 :

a. write down the formula of the function you are analysing

b. find the intervals of increase/decrease

c. find the local max/min values, the intervals of concave up/down and the points of inflection,

d.) sketch the graph of the function, ensuring that your graph displays the feautures found above

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