Please help with the following questions:

41. (a) Explain why the following calculation is incorrect, lim = lim - - lim = to -(+0) =0 (b) Show that lim x242. (a) Explain why the following argument is incorrect. 2 2 lim = lim - 1 x3 + 2x x+2 =00.0=0 2 (b) Show that lim = x2 + 2x9. For what value of & does lim exist? 1-+4 T-4 (A) -12 (B) -4 (C) 3 (D) 710. (Optional) var +b - 2 Find numbers a and b such that lim = 1 J-+0