Pia R.

asked • 06/28/16

limit of logs and es

lim as x approaches infinity of ln (3)
 
lim as x approaches infinity of ln (3-4x)
 
lim as x approaches infinity of -1/5 (e ^ - 5x)
 
lim as x approaches infinity of -1/5 (e ^ -10)
 

2 Answers By Expert Tutors

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Degonimia H. answered • 07/01/16

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New to Wyzant

Efficient work at reduced prices

Kenneth S. answered • 06/28/16

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Calculus will seem easy if you have the right tutor!

Pia R.

hi, thanks! what do u mean by the domain violation?
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06/28/16

Kenneth S.

ln t is defined for t>0; ln (3-4x) therefore requires 3-4x>0; 3>4x; i.e. 4x< 3;
therefore the domain of this function is x<¾, that is, the domain is (-infinity, ¾) and so it is not correct to even consider x→ infinity because that's waaay past ¾.
 
ONE OF THE MOST IMPORTANT THINGS IN CALCULUS IS TO IDENTIFY THE DOMAIN RESTRICTIONS ON FUNCTIONS.
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06/28/16

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