The heat equation is 1/c^2 Partial differential^2 u/partial differential t^2 = P

Question

The heat equation is 1/c^2 Partial differential^2 u/partial differential t^2 = Partial differential^2 u/partial differential x^2 + Partial differential^2 u/partial differential y^2 Partial differential^2 u/partial differential x^2 = x Partial differential^2 u/partial differential y^2 Partial differential u/partial differential t = alpha Partial differential^2 u/partial differential x^2 Partial differential^2 u/partial differential t^2 = a^2 Partial differential^2 u/partial differential x^2 Partial differential^2 u/partial differential x^2 + Partial differential^2 u/partial differential y^2 = 0

Explanation / Answer

the heat equation must be 1st order with respect to t and 2nd order with repect to x
Answer: option 3

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