For each of the following equations, determine an interval [a, b] on which fixed-point iteration will converge. Estimate the number of iterations necessary to obtain approximations accurate to within 10−5, and perform the calculations. a. x=2−ex+x23 b. x=5x2+2 c. x=(ex/3)1/2 d. x=5−x e. x=6−x f. x=0.5(sinx+cosx)