Example 17 - Let f(x) = root x, g(x) = x. Find f + g, fg, f/g

Example 17 - Chapter 2 Class 11 Relations and Functions - Part 2

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Example 17 Let f(x) = āˆšš‘„ and g(x) = x be two functions defined over the set of nonnegative real numbers. Find (f + g) (x), (f – g) (x), (fg) (x) and (š‘“/š‘”) (x) (f + g) (x) = f(x) + g(x) = āˆšš± + x, (f – g) (x) = f(x) – g(x) = āˆšš± – x (fg) x = f(x) Ɨ g(x) = √x Ɨ x = š‘„^(1/2) Ɨ x1 = š‘„^(1/2+1) = š‘„^((1+2)/2) = š’™^(šŸ‘/šŸ) (f/g) (x) = (f(x))/(g(x)) where, g (x) ≠ 0, x ∈ R = āˆšš‘„/(x ) = āˆšš‘„/(āˆšš‘„ Ć—āˆšš‘„) = 1/āˆšš‘„ Where , āˆšš‘„ ≠ 0 ⇒ x ≠ 0 ∓ (šŸ/š ) (x) = šŸ/āˆšš’™ where x ≠ 0

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