# Toronto Math Forum

## APM346-2022S => APM346--Lectures & Home Assignments => Chapter 3 => Topic started by: Zicheng Ding on February 26, 2022, 07:43:05 PM

Title: Chapter 3.1 Theorem 4
Post by: Zicheng Ding on February 26, 2022, 07:43:05 PM
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.
Title: Re: Chapter 3.1 Theorem 4
Post by: Victor Ivrii on February 27, 2022, 07:52:52 PM
Indeed, to be corrected. Thanks