Looking for help on both please Problem $4(6$ points, CCO #$1)$ a$)$ Why does the absolute of the true relative error no longer decrease for N$>35$ in problem $2?$ b$)$ Is the dominant $(=$largest$)$ error when evaluating tan $^-1($x$)$ at x$=0\mathrm{.}9999$ using myAtan with N$=50$ due to round$-$off error or truncation error $($see results of problem $3)?$ Required submission: handwritten $($or printed$)$ answers. Problem $5(9$ points, CCO #$1)$ What is the smallest possible value for N so that y$=$tan $^-1(0\mathrm{.}9999)$ evaluated using myAtan is exact when written as a half precision binary floating point number in engineering notation? Use decimal$2$binary developed in Module $1$ to answer this question. Required submission: handwritten $($or printed$)$ answer. printout of any results generated by a script; printout of script $($and any potential additional functions not submitted on Matlab Grader$)$ used to solve this problem in the Gradescope submission.