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##### Chapter 2 / f(x) in Method of Characteristics

« Last post by**Yifei Hu**on

*February 01, 2022, 09:47:20 AM*»

In solving the problem $2U_t+3U_x=0, U(0,x)=f(x)$, tutorial gave answer $U=f(x-\frac{3}{2}t)$ while I have $U=f(3t-2x)$. Are both answers valid? We can use different form of C as long as it represent the same family of characteristics right?