### Home > CALC > Chapter 11 > Lesson 11.2.1 > Problem 11-43

11-43.

A point travels along the curve *y* = *xe ^{x} *with a horizontal velocity of

*x*= –1? Homework Help ✎

Let *d* = distance from the origin. Then:

Differentiate:

Evaluate when *x* = –1:

Solve for *d′*.