Solve questions 36 and 48, please

43. lim x sin(qr/x) lim sin 5xesc 3x lim x3e8? In x tan(arx/2j lim 33 3531im rZ+O 337. lim lim 39. lim 41. 45. 47. 49. In(l + x) cos x + e arctan(2x) In x cosx 1 + } x2 34. 36. 38. 40, 42. 44. 46. 48. 50. lirn cos mx cos nx 2 x x sin(x 1) lim 2X X I XXI lim x+0+ Inx + x 1 ex e-x 2X lim cos x In(x a) lim In(ex e") lim ae-x/2 limxln 1 1 x lim x3/2 sin(l/x) lim cos x sec 5x