Let $\displaystyle {y}={4}{x}^{{2}}+{7}{x}+{4}$.
Find the differential $\displaystyle {\left.{d}{y}\right.}$ when $\displaystyle {x}={2}$ and $\displaystyle {\left.{d}{x}\right.}={0.4}$ Preview Question 6 Part 1 of 2  


Find the differential $\displaystyle {\left.{d}{y}\right.}$ when $\displaystyle {x}={2}$ and $\displaystyle {\left.{d}{x}\right.}={0.8}$ Preview Question 6 Part 2 of 2