Practice Solved Examples - 5.5 | 5. Lagrange’s Linear Equation | Mathematics - iii (Differential Calculus) - Vol 2
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5.5 - Solved Examples

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Practice Questions

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Question 1 Easy

Identify P, Q, and R in the equation ∂z/∂x + 2∂z/∂y = 3z.

💡 Hint: Express the PDE in the standard form Pp + Qq = R.

Question 2 Easy

What is the general form of a first-order PDE?

💡 Hint: Recall the elements of the equation.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the form of Lagrange's Linear Equation?

Pp + Qq = 0
Pp + Qq = R
∂z/∂x + ∂z/∂y = z

💡 Hint: Remember the equation form we discussed in class.

Question 2

Auxiliary equations arise from what kind of transformations?

True
False

💡 Hint: Think about how we derived them in examples.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given the PDE ∂z/∂x + ∂z/∂y = 5, use Lagrange's method to find the general solution and explain the steps.

💡 Hint: Pay attention to the integration steps and constants involved.

Challenge 2 Hard

For the equation ∂z/∂x + (sqrt(x) + 1)∂z/∂y = 0, derive the general solution using Lagrange's characteristics.

💡 Hint: Notice how sqrt(x) influences the auxiliary equation structure.

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