With this add-on, webReader can read both normal text and mathematical expressions as in the examples below:

## Text-based addition, subtraction and algebra

13 + 3 - (13+69)=

(a + b) + c = a + (b + c)

a / b = a(1/b)

## Text-based trigonometry

sin x - sin y = 2 sin((x - y)/2) cos((x + y)/2)

webReader can also read more complex formulas expressed using Mathematical Markup Language (MathML):

## Example using MathML

The solution to the quadratic equation $a{x}^{2}+bx+c=0$ is given by the formula:

$x=\frac{-b±\sqrt{{b}^{2}-4ac}}{2a}$

### Formula for the cosine of a sum of angles

$cos⁡(θ+φ) =cos⁡(θ)cos⁡(φ) −sin⁡(θ)sin⁡(φ)$

### Standard deviation

$σ=1N ∑i=1N(xi−μ)2.$

### Cauchy's integral formula

$f(a)=∮γf(z)z−adz$

### Gauss' divergence theorem

$∫D(∇⋅F)dV=∫∂D F⋅ndS$

### Curl of a vector field

$∇→×F→=(∂Fz∂y−∂Fy∂z)i+(∂Fx∂z−∂Fz∂x)j+(∂Fy∂x−∂Fx∂y)k$