Determine whether the following statements are true and give either an explanation or a coun- terexample. 1 = lim 22 2x x – 2 1 (a) By L'Hopital's Rule lim 1-2 x² – 1 (b) lim r sin r = lim f(x)g(x) = lim f'(x)g'(x) = (lim 1)(lim cos x) = 1 (c) The number 1 raised to any fixed power is 1. Therefore, because (1+ x) →1 as r→ 0 then we have that (1+ x)/= →1 as x → 0.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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Determine whether the following statements are true and give either an explanation or a coun-
terexample.
1 1
= lim
2+2 2x
x – 2
(a) By L'Hopital's Rule lim
= -
x+2 x2 – 1
(b) lim a sin x = lim f(x)g(x) = lim f'(x)g'(x) = (lim 1)(lim cos x) = 1
(c) The number 1 raised to any fixed power is 1. Therefore, because (1+x) →1 as x → 0 then
we have that (1+ x)/2 →1 as x → 0.
(d) The function eª grows faster than 2" as x → ∞
Transcribed Image Text:Determine whether the following statements are true and give either an explanation or a coun- terexample. 1 1 = lim 2+2 2x x – 2 (a) By L'Hopital's Rule lim = - x+2 x2 – 1 (b) lim a sin x = lim f(x)g(x) = lim f'(x)g'(x) = (lim 1)(lim cos x) = 1 (c) The number 1 raised to any fixed power is 1. Therefore, because (1+x) →1 as x → 0 then we have that (1+ x)/2 →1 as x → 0. (d) The function eª grows faster than 2" as x → ∞
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