Aqib Z.

asked • 05/08/13

Limit questions

Determine the limit..

Lim x-->0   4ex - 2e-x - 2 / x

 

1 Expert Answer

By:

Grigori S. answered • 05/09/13

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Certified Physics and Math Teacher G.S.

Aqib Z.

sir plz solve it.......... step by step

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05/13/13

Grigori S.

L'Hopital's rule says that in order to calculate limit of the function

           f(x)=4ex +2ex -2 divided by g(x) = x  we can use their derivatives

because  lim x?0 f(x) = 0 =  lim x?0 g(x)

We have f'(x) = 4ex +2e x  and g"(x) = 1  with lim x?0 (4ex +2e x) = 4+2=6

Thus, lim x?0  f(x)/g(x) = lim x?0 f'(x)/g'(x) = 6/1 = 6

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05/13/13

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