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Class 12MathematicsRelations and FunctionsFunctionsEasy
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If (f(x)=2x+3), what is the value of (f(4))?

Answer and explanation

Correct answer: (11)

Step 1: Put (x=4) in the given function. Step 2: (f(4)=2\cdot4+3=8+3=11). Step 3: In such questions, substitute first and then simplify.

Related tags

Function ValueEvaluationLinear FunctionClass 12FunctionsRelations And FunctionsMathematicsClass 12 Mcq
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10 more MCQs
  1. 1If (f:A\to B) is a function, what condition is necessary for every element of (A)?
  2. 2In a function (f:A\to B), what is (A) called?
  3. 3In a function (f:A\to B), what is (B) called?
  4. 4If (f={(1,2),(2,4),(3,6)}), what is the domain of (f)?
  5. 5If (f={(1,2),(2,4),(3,6)}), what is the range of (f)?
  6. 6Which of the following relations from (A={1,2}) to (B={3,4}) is a function?
  7. 7If (f(x)=x^2) and the domain is ({-2,-1,0,1,2}), what is the range?
  8. 8For the function (f:R\to R), (f(x)=x+5), what is (f(0))?
  9. 9If f(x) = 3x − 1, what is the value of f(2) + f(0)?
  10. 10If (f(x)=x^2+1), what is the value of (f(-2))?
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