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The solution of differential equation frac text d ^2 text u...

This question belongs to Engineering Maths Differential Equations
Differential Equations
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The solution of differential equation $$\frac{{{{\text{d}}^2}{\text{u}}}}{{{\text{d}}{{\text{x}}^2}}} - {\text{K}}\frac{{{\text{du}}}}{{{\text{dx}}}} = 0$$    where K is constant, subjected to boundary conditions u(0) = 0 and u(L) = U is

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Correct Answer: Option B
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