Multiple Equations If we use the gather environment, every equation is centered. If we use the align environment and insert an & on every line where we wish the equations to be aligned (usually at some sort of equality symbol), the equations will be aligned.

If it is inline equation, then use \allowbreak . Use it like: $x_1,x_2,x_3,\allowbreak x_4,x_5$. Latex will break equation in this place only if necessary.

For regular inline math that you want to never break across the line boundary, you could use \mbox{$... $} . Making this a rule seems a bit harsh, since longer expressions are typically allowed to break around binary and relational operators, which looks okay.

A line can APPEAR to have two different equations. but these really represent the same line as you would see if you divided the first equation by 2 or if you graphed the lines. The y-intercept of two perpendicular lines are b and −2. The x-intercept are 3 and a, respectively.

#LaTeXTip: remove equation numbering for separate lines by adding “\notag” before \\ in the align environment. Use \begin{align*} and \end{align*} to switch off numbering entirely.

There are two basic types of formula: Inline formulas are surrounded by single dollar signs. For example, $f(x) = ax^2 + bx + c$ renders as f(x)=ax2+bx+c. Block formulas are surrounded by double dollar signs. For example, $$x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}$$ renders, on a separate line, as x=−b±√b2−4ac2a.

Referencing Equations \begin{equation} \label{eq:pythagorean} a_1^2 + b_1^2 = c_1^2 \end{equation} An example table can be seen in \ref{eq:pythagorean}. Also note how the "Equation" prefix is automatically added within the document text whenever the reference is called.