APM346-2022S > Chapter 3

Chapter 3.1 Theorem 4

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**Zicheng Ding**:

In the online text book, chapter 3.1 theorem 4, we have the formula for inhomogeneous heat equations. For the second integral in the formula, since it represents the homogeneous part of the heat equation and the heat equation is linear, should the range be from $-\infty$ to $\infty$ instead of $0$ to $\infty$? The equation we are solving have the range of $-\infty < x < \infty$ and $t > 0$ as usual.

**Victor Ivrii**:

Indeed, to be corrected. Thanks

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