The teachers’ library
Formulas, graphs, drawings and solids of school and college mathematics, written the way English-language textbooks write them. Open any of them on a new board in one click, or add it to a board of yours with its Library button.
Algebra
- Special products and factoring
- Laws of exponents
- Properties of radicals
- Quadratic formula
- The discriminant and the nature of roots
- Completing the square
- Sum and product of roots
- Absolute value
- Laws of logarithms
- Arithmetic sequences and series
- Geometric sequences and series
- Sums of powers
- AM–GM inequality
- Interval notation
- Operations with fractions
- Percentages and compound interest
Trigonometry
Functions and graphs
- Linear function y = mx + b
- Direct variation y = kx
- Quadratic function y = ax² + bx + c
- Vertex form y = a(x − h)² + k
- y = x²
- y = x³
- Power function y = xⁿ
- Reciprocal function y = k/x
- Square root function y = √x
- Cube root function y = ∛x
- Absolute value function y = |x|
- Exponential functions
- Logarithmic functions
- y = eˣ and y = ln x
- y = sin x
- y = cos x
- y = tan x
- Inverse sine and cosine
- Inverse tangent
- Transformations of graphs
Geometry
- Angle sum of a triangle
- Pythagorean theorem
- Area of a triangle
- Heron's formula
- Law of sines
- Law of cosines
- Length of a median
- Triangle midsegment theorem
- Inscribed circle
- Circumscribed circle
- Parallelogram
- Rectangle
- Square
- Rhombus
- Trapezoid
- Circumference and area of a circle
- Arc length and sector area
- Inscribed angle theorem
- Tangent to a circle
- Regular polygon
- Angles of a polygon
- Intersecting chords theorem
- Parallel lines cut by a transversal
- Similar triangles