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JEE Mains · Maths · STD 12 - 9. differential equations

અહી \(f : R \rightarrow R\) એ વિકલનિય વિધેય છે કે જેથી \(f^{\prime}(x)+f(x)=\int \limits_0^2 f(t) d t\) થાય જો  \(f(0)=e^{-2}\) હોય તો  \(2 f (0)- f (2)\) ની કિમંત  \(.........\) મેળવો.

  1. A \(2\)
  2. B \(3\)
  3. C \(1\)
  4. D \(4\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(1\)

Step-by-step Solution

Detailed explanation

\(\frac{d y}{d x}+y=k\) \(y \cdot e^x=k \cdot e^x+c\) \(f(0)=e^{-2}\) \(c=e^{-2}-k\) \(y=k+\left(e^{-2}-k\right) e^{-x}\) \(\text { now } k=\int \limits_0^2\left(k+\left(e^{-2}-k\right) e^{-x}\right) d x\) \(k=e^{-2}-1\) \(y=\left(e^{-2}-1\right)+e^{-x}\)…
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