Transforms And Partial Differential Equations: UNIT I: Partial Differential Equations

Solved Example Problems based on p.d.e Type 4 Separable equations

Partial Differential Equations

Transforms And Partial Differential Equations: UNIT I: Partial Differential Equations: Examples

Problems based on Type 4. Separable equations.

 

Example 1.3b(31) : Solve p2y (1 + x2) = q2.

Solution: Given: p2y (1+x2) = qx2


This is the complete integral where a and b are arbitrary constants.

Differentiating partially w.r.to b, we find that there is no singular integral.

 

Example 1.3b(32): Find the complete solution of p+q=sin x + sin y.

Solution: Given: p + q = sin x + sin y

The given differentiating equation can be written as

[We can solve this easily by Lagrange's idea]

 

Example 1.3b(33): Find the complete integral of pq = xy.



Example 1.3b(34) Find the complete integral of Vp + √q = 2x.



Example 1.3b(35) Find the complete integral of p-1 x+q -1y = 1.

Solution : Given: p-1 x+q -1y = 1.

The given equation can be written as


 

Example 1.3b(36): Solve the equation yp=2yx + log q.

Solution:


where a and b are arbitrary constants equation (3) is the complete solution of the given equation.

Since, the number of a.c. = number of I.V

differentiating (3) p. w.r.to b, we get


Eliminate 'a' between (4) and (5), we get the general solution.

Transforms And Partial Differential Equations: UNIT I: Partial Differential Equations : Tag: : Partial Differential Equations - Solved Example Problems based on p.d.e Type 4 Separable equations


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Transforms and Partial Differential Equations

MA3351 3rd semester civil, Mechanical Dept | 2021 Regulation | 3rd Semester Mechanical Dept 2021 Regulation