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What will be the output of log (-5.8) when executed on R console?

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+1 vote
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What will be the output of log (-5.8) when executed on R console?

(a) NAN

(b) NA

(c) Error

(d) 0.213

This question was addressed to me in an internship interview.

I want to ask this question from Functions in section Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming

1 Answer

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Best answer
Right choice is (a) NAN

Explanation: Executing the above on R console or terminal will display a warning sign that NaN (Not a Number)  will be produced in R console because it is not possible to take a log of a negative number(-).

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