Question

Which of the following is cauchy's equation ? B. (A) x = + 4 1 22 23 (Β) μ = (B) u = 4 + (- B B (C) u = A + CA (D) u = A.​

Answer 1

Answer:

An equation is said to be of order two, if it involves at least one

of the differential coefficients r = (

2

z /

2

x), s = (

2

z / x y), t =(

2

z /

2

y), but

now of higher order; the quantities p and q may also enter into the equation. Thus the

general form of a second order Partial differential equation is

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