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27 April, 19:09

Lim x - > infinity ((e^ (3x)) - (e^ (-3x))) / ((e^ (3x)) + (e^ (-3x)))

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  1. 27 April, 20:18
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    When x approaches to + ∞ the function e^ 3x becomes much bigger then e^ - 3x, which obviously means that e^ - 3x can be neglected in both numerator and denominator.

    Here's how I figured this out:

    lim x →+∞ = (e^ (3x)) - (e^ (-3x)) / (e^ 3x)) + (e^ (-3x)) = lim x → + ∞ e^ 3x / e^ 3x = 1
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