. For f(x) = (x2 - 1) / (x + 4). Find (i) f(1)     (ii) f(-x)     (iii) f(2x)   2. Given f(x) = 2x2 + 5x and g(x) = 3x - 7, find the following (i)  (g + f)(2)                (ii)  (gf)(3)   3. If f(x) = 3x + 7, g(x) = (2x - 6) / 4. Find g[f(x)]

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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1. For f(x) = (x2 - 1) / (x + 4). Find (i) f(1)     (ii) f(-x)     (iii) f(2x)

 

2. Given f(x) = 2x2 + 5x and g(x) = 3x - 7, find the following

(i)  (g + f)(2)                (ii)  (gf)(3)

 

3. If f(x) = 3x + 7, g(x) = (2x - 6) / 4. Find g[f(x)]

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