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For f(x) = floor(x), what is the value of f(x) at x = -3?

Answer and explanation

Correct answer: -3

The floor function, written as ⌊x⌋, is defined as the greatest integer less than or equal to x. When x itself is an integer, that integer satisfies the condition and is already the greatest possible integer not exceeding x. Since -3 is an integer, ⌊-3⌋ = -3, so option B is correct. The result is not -4 because -4 is less than -3 and is therefore not the greatest eligible integer. It is not 3 because the floor function does not remove the negative sign, and it is not 0 because 0 is greater than -3 and does not satisfy the requirement of being less than or equal to the input. The distinction matters mainly for non-integer negative values, such as ⌊-3.2⌋ = -4.

Related tags

Standard-FunctionsGreatest-Integer-FunctionInteger-InputGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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