I've been trying to solve this limit without application of L'Hospital's rule for some time now, but with no success, tried a couple of approaches but all end up in dead end.
limx→0ln(e+x)−excos2x−ex
any kind of hint would be appreciated.
Answer
ln(x+e)−excos2x−ex
=1+ln(1+x/e)−ex(cosx+ex/2)(cosx−ex/2)
=−1e⋅ln(1+x/e)x/e−ex−1x(cosx+ex/2)(−12⋅ex/2−1x/2−1−cosxx)
Now 1−cosxx=x1+cosx⋅(sinxx)2
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