The sequence is .
A sequence is convergent, then there exist , where is a constant.
Apply L hospital rule.
Therefore, the sequence converges at .
The sequence converges at .
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is convergent, then there exist ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7482ecae948786c84dc3bf84d5b9b91f.png\")
, where ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=be2a7b10dfe2c9dee982519073f5d070.png\")
is a constant.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=de24ddfa07e41e37213eec46443e551f.png\")
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. ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
.