Verified Solution • 2025–26 Session moderate

QJEEM23Mad3d6: JEE Main 2023 Mathematics - Class 12 JEEM23Mad3d6 Solution: The minimum value of the function is :

The minimum value of the function f(x)=∫02e∣x−t∣dtf(x) = \int\limits_0^2 {{e^{|x - t|}}dt} is :

Multiple Choice Options

  • A 2
  • B 2(e−1)2(e-1)
  • C e(e−1)e(e-1)
  • D 2e−12e-1

Step-by-Step Verified Solution

f(x)=∫02e∣x−t∣dtf(x)=\int_0^2 e^{|x-t|} d t

For x>2

f(x)=∫02ex−tdt=ex(1−e−2)f(x)=\int_0^2 e^{x-t} d t=e^x\left(1-e^{-2}\right)

For x<0

f(x)=∫02et−xdt=e−x(e2−1)f(x)=\int_0^2 e^{t-x} d t=e^{-x}\left(e^2-1\right)

For x∈[0,2]x \in[0,2]

amp;f(x)=∫0xex−tdt+∫x2et−xdtamp;=e2−x+ex−2\begin{aligned}& f(x)=\int_0^x e^{x-t} d t + \int_x^2 e^{t-x} d t \\\\& =e^{2-x}+e^x-2\end{aligned}

For x>2

f(x)∣min⁡=e2−1\left.f(x)\right|_{\min =e^2-1}

For \mathrm{x}<0

f(x)∣min⁡=e2−1\left.f(x)\right|_{\min =e^2-1}

For x∈[0,2]x \in[0,2]

f(x)∣min⁡=2(e−1)\left.f(x)\right|_{\min }=2(e-1)

Related Learning Resources & Exam Preparation