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AP EAMCET · Maths · Definite Integration

\(\int_1^5(|x-3|+|1-x|) d x=\)

  1. A 4
  2. B 8
  3. C 12
  4. D 24
Verified Solution

Answer & Solution

Correct Answer

(C) 12

Step-by-step Solution

Detailed explanation

\begin{aligned} & \text { }|x-3|= \begin{cases}3-x, & x \lt 3 \\ x-3, & x\gt3\end{cases} \\ & \text { and }|1-x|=x-1 ; x\gt1 \\ & I=\int_1^5(|x-3|+|1-x|) d x \\ & =\int_1^3(3-x+x-1) d x+\int_3^5(x-3+x-1) d x \\ & =\int_1^3 2 d x+\int_3^5(2 x-4) d x=4+\left[x^2-4 x\right]_3^5=12…

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