Try our workspace again!

Let's look now at a mathematical equation that is directly related to Linear Algebra:

(We will of course dive into these terminologies in the lesson)

Vector $\vec{x}=\begin{bmatrix} 4\\2\end{bmatrix}$ has two elements:

• $x_1=4$
• $x_2=2$

Matrix $M=\begin{bmatrix} 4&5\\8&2\end{bmatrix}$ has four elements:

• $m_{11}=4$
• $m_{12}=5$
• $m_{21}=8$
• $m_{22}=2$

The following three elements were defined in the vector and matrix above. Let's make sure we know how to define them in LaTex:

(Note that the order the equations entered is important)

1) $x_2=2$

2) $m_{12}=5$

3) $m_{21}=8$

Hint:
The LaTex code for the three equations we used is:

x_2=2

m_{12}=5

m_{21}=8

Note:
Do not use the enter / return button. . Add you answer in the space giver. Wait a few seconds for our workspace to give you the result.

Ok, we are now ready to start!