Let $\displaystyle {y}={5}{x}^{{2}}$.
Find the change in $\displaystyle {y}$, $\displaystyle \Delta{y}$ when $\displaystyle {x}={1}$ and $\displaystyle \Delta{x}={0.4}$ Preview Question 6 Part 1 of 2  


Find the differential $\displaystyle {\left.{d}{y}\right.}$ when $\displaystyle {x}={1}$ and $\displaystyle {\left.{d}{x}\right.}={0.4}$ Preview Question 6 Part 2 of 2