CBSE Class 12-science Answered
2011,18, invertible with inverse.
Asked by alanpeter9611 | 26 Feb, 2019, 02:19: AM
Expert Answer
f(x) = y = x2 + 4
x2 = y - 4
f : R+ → [4, ∞)
hence x is positive.
hence we can not take 
Consider g(y) = 
g : [4, ∞) → R+
Find 
f is invertible.
f-1 =
Answered by Sneha shidid | 26 Feb, 2019, 09:37: AM
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