Chapter 7, Problem 15P

To determine

(a)

Auser-defined MATLAB function that calculates the area of a triangle from the given vertices’ coordinates by using $\text{[Area] = TriArea(A,B,C)}$ as function name and arguments; thearea of triangle with the following vertices $A\text{ =}\left(\text{ 1, 2}\right)$, $B\text{ = }\left(\text{10, 3}\right)$ and $C\text{ = }\left(\text{6, 11}\right)$. (Write the code of $\text{TriArea}$ such that it has two subfunctions—one that determines the vectors $AB$ and $AC$ and another that executes the cross product. (If available, use the user-defined functions from Problem $14$ .))

To determine

(b)

Auser-defined MATLAB function that calculates the area of a triangle from the given vertices’coordinates by using $\text{[Area] = TriArea(A,B,C)}$ as function name and arguments; thearea of triangle with the following vertices $A=\left(-1.5,-4.2,-3\right)$, $B\text{ = }\left(-\text{5}\text{.1, 6}\text{.3,}\text{2}\right)$ and $C\text{ = }\left(\text{12}\text{.1, 0,}-\text{0}\text{.5}\right)$. (Write the code of $\text{TriArea}$ such that it has two subfunctions—one that determines the vectors $AB$ and $AC$ and another that executes the cross product. (If available, use the user-defined functions from Problem $14$ .))