# Weird behavior on Chebyshev

**URL:** <https://openfhe.discourse.group/t/weird-behavior-on-chebyshev/630>\
**Category:** Library Questions\
**Created:** [June 13, 2023, 6:07pm UTC](https://openfhe.discourse.group/t/weird-behavior-on-chebyshev/630 "2023-06-13T18:07:58Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![narger](https://yyz1.discourse-cdn.com/flex031/user_avatar/openfhe.discourse.group/narger/32/420_2.png) [@narger](https://openfhe.discourse.group/u/narger)\
**Post date:** [June 14, 2023, 10:36am UTC](https://openfhe.discourse.group/t/weird-behavior-on-chebyshev/630/6 "2023-06-14T10:36:57Z")

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I suggest you to take advantage of the fact that e^x = (e^{x/10})^{10} and approximate e^{x/10} in [-1, 1] (it might take more levels but it is more stable for sure).

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