Class 12 Relations And Functions · Mcq Single Correct1 Markstypes_of_functions
Class 12 Maths · Relations And Functions · Mcq Single Correct #14
Which of the functions defined below is one-one?
✅ Step-by-Step Solution
Final Answer: Option (B): \(f:[0,\infty)\to\mathbb{R},\ f(x)=x^2+4x-5\)
- Option (b) is strictly increasing on \([0,\infty)\). The others have collisions: (a) at 1 and 3; (c) at opposite inputs; (d) at 0 and -1.
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