$\displaystyle {z}=\sqrt{{{x}^{{2}}+{y}^{{2}}}}$. Find the true difference in the function values from f(7,24) to $\displaystyle {\left({7.2},{24.4}\right)}$.

Give $\displaystyle \triangle{z}$ to 6 decimal places and $\displaystyle {\left.{d}{z}\right.}$ to 3 decimal places.

$\displaystyle \triangle{z}$ = Preview Question 6 Part 1 of 2  

$\displaystyle {\left.{d}{z}\right.}$ = Preview Question 6 Part 2 of 2