Question
Download Solution PDFअवकल समीकरण \(\rm 2y\frac{dx}{dy}+ x = 5y^{2}\)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFसंकल्पना:
संकलन गुणक, (IF) अवकल समीकरणासाठी, \(\rm\frac{dx}{dy}+Px= Q\), जेथे P आणि Q ला y चे सतत कार्य दिले जाते.
IF = \(\rm e^{\int Pdy}\)
Calculation:
दिलेले समीकरण असे सरळ केले जाऊ शकते,
\(\rm \frac{\mathrm{d} x}{\mathrm{d} y}+ \frac{x}{2y} = \frac{5}{2}y\)
मानक समीकरणाची समीकरणएक ची तुलना केल्यावर , \(\rm\frac{dx}{dy}+Px= Q\) , मिळते ,
P = \(\rm \frac{1}{2y}\) आणि Q = \(\rm \frac{5}{2}y\)
∴ IF = \(\rm e^{\int Pdy}\) = \(\rm e^{\int \frac{1}{2y}dy}\)
⇒ IF = \(\rm e^{\frac{1}{2}\log y}\) = \(\rm e^{\log y^{\frac{1}{2}}}\)
⇒ IF = \(\rm \sqrt{y}\) . ( ∵ \(\rm e^{a \log x}= x^{a}\) )
पर्याय 1 हे योग्य उत्तर आहे.
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