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Bernoulli’s Equation - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

Quick Facts

  • Bernoulli’s Equation is considered one the most difficult concept.

  • 7 Questions around this concept.

Concepts Covered - 1

Bernoulli’s Equation

When DE is not in the linear form, it can sometimes be converted into a linear form with the help of proper substitution.

An equation of the form

\\\mathrm{\frac{dy}{dx}+P(x)\cdot y=Q(x)\cdot y^n\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\ldots(i)}

Where P(x) and Q(x) are a function of x only, is known as Bernoulli’s equation.

(If we put n = 0, then the equation is in linear form.) 

To reduce Eq (i) into linear form, divide both sides by yn,

\\\mathrm{\;\;\;\;\;\;\;\;\;\frac{1}{y^n}\cdot\frac{dy}{dx}+\frac{P(x)}{y^{n-1}}=Q(x)\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;}\\\\\mathrm{or\;\;\;\;\;\;y^{-n}\cdot\frac{dy}{dx}+{y^{1-n}}\cdot P(x)=Q(x)\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\ldots(ii)}\\\\\text{Putting }y^{1-n}=t, \text{converts this equation into a linear equation in t, which can then be solved}

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Bernoulli’s Equation

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