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Class 12MathematicsRelations and FunctionsFunctionsEasy
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If (f(x)=\frac{x+1}{2}), what is (f(7))?

Answer and explanation

Correct answer: (4)

Step 1: On putting (x=7), the numerator becomes (7+1=8). Step 2: Hence (f(7)=\frac{8}{2}=4). Step 3: In fraction-based functions, simplify the numerator first.

Related tags

Fraction FunctionFunction ValueEasy McqRelationsFunctionsRelations And FunctionsMathematicsClass 12 Mcq
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  1. 1If (f:A\to B) is a function, what condition is necessary for every element of (A)?
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  3. 3In a function (f:A\to B), what is (A) called?
  4. 4In a function (f:A\to B), what is (B) called?
  5. 5If (f={(1,2),(2,4),(3,6)}), what is the domain of (f)?
  6. 6If (f={(1,2),(2,4),(3,6)}), what is the range of (f)?
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  8. 8If (f(x)=x^2) and the domain is ({-2,-1,0,1,2}), what is the range?
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  10. 10If f(x) = 3x − 1, what is the value of f(2) + f(0)?
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