The derivative of a function f is given by f′(x)=ex−x3.On which intervals is the graph of f decreasing?Use a graphing calculator.Choose 1 answer:(A) [1.857,4.536](B) (−∞,1.857] and [4.536,∞)(C) (−∞,−0.459] and [0.91,3.733](D) [−0.459,0.91] and [3.733,∞)(E) All real numbers Get tutor helpComplete the recursive formula of the arithmetic sequence −15,−11,−7,−3,…c(1)=□c(n)=c(n−1)+□ Get tutor help