4. the free online calculator tool wolfram alpha () under- stands standard mathematical language such as "solve 17x=13 (mod 29" (ans: 11) and "factorise 1428" (ans: 22 x 3 x 7 x 17). use this tool to solve the following problem. for each step just write down your input to, and output from, wolfram alpha. using rsa with n=14351 and e=499, i encode r (0

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)