**A few things to keep in mind:**

- The format for entering in your solutions uses $+, -$ for addition and subtraction, respectively, and the ^ sign for exponents. The amount of spacing between the numbers, variables, and operations does not matter. e.g.
`x^2 - 3x + 4`

$\longrightarrow x^2 - 3x + 4$`3 x ^ 2 -3x+4`

$\longrightarrow x^2 - 3x + 4$`-2(x - 4)^2 + 4`

$\longrightarrow (x - 4)^2 + 4$`2(4 x - 3)(x + 12 )`

$\longrightarrow 2(4 x - 3)(x + 12 )$

- When you have to write down a number that is not an integer (that is, a fraction), round everything to the nearest tenths place. e.g. $\frac{1}{2} = 0.5, \; \frac{3}{4} = 0.8, \; \frac{22}{7} = 3.1$
- When a quadratic factors into two identical factors, make sure to write the solution as such: \[x^2 - 4x + 4 = (x - 2)^2\] rather than \[x^2 - 4x + 4 = (x - 2) (x - 2)\] Even though the latter is technically correct, we want to get into the habit of writing these things with exponents in a concise way.
- When factoring polynomials, the coefficient of the linear terms of the factors should always be positive. That is, \[-x^2 + 1 = -(x + 1) (x - 1), \text{ not } -x^2 + 1 = (-x - 1)(x - 1) \text{ or } (x + 1) (-x + 1)\]

**A few things to keep in mind:**

- In the input boxes, make sure to write your matrices where each row is written in a separate line and the row elements are separated by commas. Some examples are shown below. Remember that there are no commas at the end of each line, and you
*must*make a new line for new rows.- The matrix
\[\begin{pmatrix} 2 & 3 \\ 1 & 4 \end{pmatrix}\]
is written
2, 3 1, 4

- The matrix
\[\begin{pmatrix} -2 & 13 & 0 & -7\\ 0 & 0 & -12 & 81 \\ 13 & -4 & -9 & 43 \end{pmatrix}\]
is written
-2, 13, 0, -7 0, 0, -12, 81 13, -4, -9, 43

- The matrix
\[\begin{pmatrix} 2 & 3 \\ 1 & 4 \end{pmatrix}\]
is written
- If the problem ever overfills to the point where the solution box is covering the exercise, then you can temporarily zoom out (press
`CTRL`

and`-`

keys), which should give you more space.

To be updated when teaching calculus.