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Differential Equation X D Y D X = 1 , Y ( 1 ) = 0 Function Y = Log X

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प्रश्न

Differential equation \[x\frac{dy}{dx} = 1, y\left( 1 \right) = 0\]

Function y = log x

योग
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उत्तर

We have,

\[y = \log x...........(1)\]

Differentiating both sides of (1) with respect to x, we get

\[\frac{dy}{dx} = \frac{1}{x}\]

or,

\[x\frac{dy}{dx} = 1\]

It is the given differential equation.

Thus, \[y = \log x\]  satisfies the given differential equation.

Hence, it is a solution.

Also, when \[x = 1, y = \log 1 = 0, i.e., y\left( 1 \right) = 0\]

Hence, \[y = \log x\] is the solution to the given initial value problem.

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अध्याय 21: Differential Equations - Exercise 22.04 [पृष्ठ २८]

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आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 12
अध्याय 21 Differential Equations
Exercise 22.04 | Q 1 | पृष्ठ २८

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