### Author Topic: Question about the posted solution for HW1 3c  (Read 613 times)

#### Yuanhan (Phyllis) Peng

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##### Question about the posted solution for HW1 3c
« on: January 27, 2022, 12:39:22 PM »
I am confused about why when we integrate the left hand side Ux/e^u, we used the x' in Ux(x', y) expression, but we didn't change x in e^u(x,y)

The screenshot is attached.

#### Victor Ivrii

It was a misprint; it should be $e^{u(x',y)}$ in the denominator