Question
Download Solution PDFनिम्नलिखित में से किस अवकल समीकरण का सामान्य हल y = aex + be-x है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFअवधारणा:
- अवकल समीकरण: एक अवकल समीकरण वह समीकरण है जो एक या एक से अधिक फलन और उनके अवकलजों को जोड़ता है।
जैसे \(\rm \frac{dy}{dx}\) + x = 2y + 3, आदि।
- \(\rm \dfrac{d}{dx}e^{f(x)}=\dfrac{d}{dx}f(x)e^{f(x)}\)
गणना:
y = aex + be-x
⇒ \(\rm \frac{dy}{dx}=\frac{d}{dx}ae^x +\frac{d}{dx}be^{-x}\)
⇒ \(\rm \frac{dy}{dx}\) = ae x - be -x
⇒ \(\rm \frac{d}{dx}\left(\frac{dy}{dx}\right)=\frac{d}{dx}(ae^x -be^{-x})\)
⇒ \(\rm \frac{d^2y}{dx^2}\) = ae x + be -x = y
⇒ \(\rm \frac{d^2y}{dx^2}\) - y = 0
∴ y = aex + be-x का सामान्य हल \(\rm \frac{d^2y}{dx^2}\) - y = 0 है
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