a^2 + b^2 = c^2
ax^2 + bx + c = 0
x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
\sin^2 \theta + \cos^2 \theta = 1
A = \pi r^2
y = mx + b
a_n = a_1 + (n-1)d
a_n = a_1 \cdot r^{n-1}
f(x) = \sum_{n=0}^{\infty} \frac{f^{(n)}(a)}{n!}(x - a)^n
e^{i\theta} = \cos \theta + i \sin \theta
A = \begin{pmatrix} a & b \\ c & d \end{pmatrix}
\frac{\partial z}{\partial x} = \lim_{\Delta x \to 0} \frac{f(x + \Delta x, y) - f(x, y)}{\Delta x}
\iint_D f(x, y) \, dA
\nabla \cdot \vec{F} = \frac{\partial F_x}{\partial x} + \frac{\partial F_y}{\partial y} + \frac{\partial F_z}{\partial z}
\det(A) = \begin{vmatrix} a & b \\ c & d \end{vmatrix} = ad - bc