15. Which function is always positive? 3 a. f(x) = b. f(x) = 2x+4 1 +4 c. f(x) = 1 (x-4)² d. B and C

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Pls help on both questions PLS I HUMBLY REQUEST

15. Which function is always positive?
3
a. f(x)=
2x + 4
1
b. f(x) = = = = 4
+4
c. f(x):
=
1
(x-4)²
d. B and C
Transcribed Image Text:15. Which function is always positive? 3 a. f(x)= 2x + 4 1 b. f(x) = = = = 4 +4 c. f(x): = 1 (x-4)² d. B and C
14. What is true about the function f(x)
a. f(x) → 0 from above
1
x - 3
b. f(x) → 0 from below
=
as X → co?
c. f(x) → 11/2
13
d. f(x) is undefined
Transcribed Image Text:14. What is true about the function f(x) a. f(x) → 0 from above 1 x - 3 b. f(x) → 0 from below = as X → co? c. f(x) → 11/2 13 d. f(x) is undefined
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