Problem 20E

19-22 Compute $\Delta y$ and $d y$ for the given values of $x$ and $d x=\Delta x$. Then sketch a diagram like Figure 5 showing the line segments with lengths $d x, d y$, and $\Delta y$.

20. $y=x-x^{3}, \quad x=0, \quad \Delta x=-0.3$

 

Step-by-Step Solution