2. Let f.g: R Rand : RR be given functions. Determine if each statement is true or false. (i) If f.g are convex, then h(x,y) = (f(x)+g(y))² is convex. (ii) If f, are convex, differentiable, and > 0, then (f(x)) is convex. (iii) If f.g are concave and positive, then √f(x)g(x) is concave.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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2. Let f,g: RR and RR be given functions. Determine if each statement is true
or false.
(i) If f, g are convex, then h(x,y) = (f(x)+g(y))² is convex.
(ii) If f, are convex, differentiable, and > 0, then (f(x)) is convex.
(iii) If f, g are concave and positive, then √f(x)g(x) is concave.
Transcribed Image Text:2. Let f,g: RR and RR be given functions. Determine if each statement is true or false. (i) If f, g are convex, then h(x,y) = (f(x)+g(y))² is convex. (ii) If f, are convex, differentiable, and > 0, then (f(x)) is convex. (iii) If f, g are concave and positive, then √f(x)g(x) is concave.
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