Area of a Circle

$$\mathrm{\pi <!--\; p\; -->}<!--\; \; -->r^2$$

Quadratic Equation

$$a{x}^2+bx+c=0$$

Quadratic Formula

$$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$$

Embedded Table

$$A=\left[\begin{array}{cc}x& y\\ z& w\end{array}\right]$$

Semantics (MathML tag - with content markup annotation)

$${\int }_1^t\frac{dx}{x}$$

Polynomial Equation (with mstyle)

$${\displaystyle a{x}^2+bx+c=0}$$

Complex Equation

$$2x\times -\frac{1}{16}+{-5}^2=24⁤\frac{15}{16}$$

E Equals MC Squared in Table (not currently working with speech in MathCAT, but displays in Braille)

$$\begin{array}{}& E=m<!--INVISIBLE\; TIMES-->c^2\end{array}$$

Broken Fences

$$\left\{\right[a+b+c)-d\}$$

Fenced 1

$$\left(a+b\right)$$

GroupAligned

$$\begin{array}{c}8.44<!--INVISIBLE\; TIMES-->x+55<!--INVISIBLE\; TIMES-->y=0\\ 3.1<!--INVISIBLE\; TIMES-->x-0.7<!--INVISIBLE\; TIMES-->y=-1.1\end{array}$$

Sine Function

$$\sin x + 5$$

Enclosed

$$\overline{)x+y}$$

Cubed Root of x

$$\sqrt[3]{x}$$

Fourth Root of 64

$$\sqrt[4]{\mathrm{64}}$$

Cubed Root of x +1

$$\sqrt[3]{x}+1$$

Fifth Root of x

$$\sqrt[5]{x}$$

Minus one Third Root of the Quanity x Plus 1

$$\sqrt[\frac{-1}{3}]{x+1}$$

Cauchy's Integral Formula

$$f(a)=\frac{1}{2\pi i}\oint \frac{f(z)}{z-a}dz$$

Double Angle Formula for Cosines

$$\cos (\theta +\phi )=\cos (\theta )\cos (\phi )-\sin (\theta )\sin (\phi )$$

Parentheses for Exponents and Logs

$$(4x^{\frac{1}{4}}){(9x)}^{\frac{1}{2}}$$

Log Base 2

$${\log }_{2}x$$

Natural Log of E Equals 1

$$\ln e=1$$

Volume of a Sphere

$$V=\frac{4}{3}\pi r^3$$

Subscript Arithmetic

$$x_1+x_2-x_3$$

The Circle Formula

$${\sin }^{2}x+{\cos }^{2}y=1$$

A Curl Vector Field

$${\mathrm{\nabla }}^{\to }\cdot F^{\to }=(\frac{\partial F_z}{\partial y}-\frac{\partial F_y}{\partial z})i+(\frac{\partial F_x}{\partial z}-\frac{\partial F_z}{\partial x})j+(\frac{\partial F_y}{\partial x}-\frac{\partial F_x}{\partial y})k$$

Triangle Shape

$$ABC△$$

Arc Symbol

$$\stackrel{\text{⌒}}{AB}$$

Left Arrow Symbol

$$\overleftarrow{AB}$$

Special Division Sign

$$10\because 5$$

Limit of x Goes to Infinity of f of x

$$li{m}_{x\to \mathrm{\infty }}f(x)$$

Area of a Sphere

$$A=4\pi r^2$$ Trig Functions of a Right Triangle (B A C), including inverse functions

$$\sin A=\frac{A}{C}$$

$$\cos A=\frac{B}{C}$$

$${\sin }^{-1}x=arcsinx$$

$$\tan \theta =\frac{A}{B}$$

$$\cot A=\frac{B}{A}$$

$$\sec A=\frac{C}{A}$$

$$\csc A=\frac{C}{B}$$