GATE (TF) Textile 2020 Question Paper Solution | GATE/2020/TF/02

Question 02 (Textile Engineering & Fibre Science)
Q.2 The integrating factor of the differential equation \frac{dy}{dx} + y = e^{-x} is
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\frac{dy}{dx} + y = e^{-x}

Compare with equation \frac{dy}{dx} + Py = Q

Where P and Q are the function of x ,P=1 and Q=e^{-x}

Integrating factor=e^\int{P} dx

Integrating factor=e^\int{1} dx

Integrating factor=e^x

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