Which one of the following is correct in respect of the function f:R\toR^{+} defined as 𝑓(𝑥)=|𝑥+1|? [NDA I 2018]

Correct Answer is : None of the above

𝑓(𝑥 + 𝑦) = 𝑓(𝑥) + |𝑓(𝑦)

UPSC NDA I 2018 Mathematics Solved Paper

Question : 71 of 120

Marks: +1, -0

Which one of the following is correct in respect of the function f:R→R+ defined as 𝑓(𝑥)=|𝑥+1|?

[NDA I 2018]

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