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Messages - Emman Subhani

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Chapter 1 / Ch.1.1 - 8
« on: January 22, 2023, 07:14:01 PM »
Ch.1.1- 8 :xux +yuy + zuz =0

For this question, I see that xux + yuy is Linear Homogenous. However, looking at zuz, I believe that the most precise answer for this question is Linear Homogenous as well right?

Chapter 1 / Ch.1.2(16)
« on: January 22, 2023, 10:54:52 AM »
$$u_{t} + u_{xxxx} + u=0 \tag{1.2.16}$$
I understand that the first part of the equation ( $u_t +u_{xxxx}$) is definitely Linear Homogenous. However, the $u$ in the last part is confusing me and I am stuck between two answers - linear homogenous or semi linear?

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