Let f : R → R be defined by . Find .

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NIMCET 2018 Official Paper
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  1. 0.5
  2. 2.5
  3. 4.5
  4. 6.5

Answer (Detailed Solution Below)

Option 3 : 4.5
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NIMCET 2020 Official Paper
120 Qs. 480 Marks 120 Mins

Detailed Solution

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Concept:

  • Definite Integral: If ∫ f(x)dx = g(x) + C, then  = g(b) - g(a).
  • If a ≤ c ≤ b, then .
  • .

 

Calculation:

The given function can be summarized as follows:

x x < 0 0 ≤ x < 2 2 x
f(x) x + 2 2 - x x - 2

 

Since the given function is a multi-valued function, let us separate the given definite integral into parts where the expressions of the function are different:

= 4.5

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