_ ?_ ?_???_êee2n??#?‰77. lim lim lim lim convergesnnn n?_ ?_ ?_ ?_n sin2n 1?‰?#"?? ??êsincoscos?‰?‰??? ??‰?‰???‰"""##$""#nn222nnnnnn2n??????#?78. lim n 1 cos lim lim lim sin 0 convergesnnnn?_ ?_ ?_ ?_?‰?‰?? ?? ?ê""nn?‰?‰?‘?‰????"?cos sin""""#"#nnnnn79. lim nsin lim lim lim cos cos 0 1 convergesnnnn?_ ?_ ?_ ?_è?? ??11nnsin cosèè?? ??? ??? ???ê??80. lim 3 5 lim exp ln 3 5 lim exp lim expnn nn?_ ?_ ?_ ?_ab ab’“’“–—nnnn1n1nln3 5n1?? ??????ab lim exp lim expexp ln 5 5????nn?_ ?_’“’“ab???‰?‰?‰ln 3 ln 511ln 3 ln 5????81. lim tan n converges 82. lim tan n 0 0 convergesnn?_ ?_?"?"##"?ê? ?ê11èn?Copyright ? 2010 Pearson Education Inc. Publishing as Addison-Wesley.
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