How to Enter Math in the Quizzes

Basic Operations

OperationCommand
addition \((a+b)\)a+b
subtraction \((a-b)\)a-b
multiplication \((a \cdot b)\)a*b
division \(\left(\dfrac{a}{b}\right)\)a/b
exponentiation \((a^{b})\)a^b

Constants & Symbols

Constant/SymbolCommand
\(\pi\)Pi
\(\text{e}\)exp(1)
\(\text{i}\)I
\(\infty\)infinity

Functions

FunctionCommand
trigonometric \(\left(\sin(x), \cos(x), \tan(x), \csc(x), \sec(x), \cot(x)\right)\)sin(x), cos(x), tan(x), csc(x), sec(x), cot(x)
inverse trig \(\big(\sin^{-1}(x)\) or \(\arcsin(x)\), \(\cos^{-1}(x)\) or \(\arccos(x)\), \(\tan^{-1}(x)\) or \(\arctan(x)\big)\)arcsin(x), arccos(x), arctan(x)
exponential \(\left(e^{x}\right)\)exp(x)
logarithmic \(\left(\ln(x), \log_{a}(x)\right)\)ln(x), ln(x)/ln(a)
square root \(\left(\sqrt{x}\right)\)sqrt(x)
\(\text{n}^{th}\) root \(\left(\sqrt[n]{x}\right)\)surd(x,n)
absolute value \(\left(\lvert x \rvert\right)\)abs(x)
factorial \(\left(n!\right)\)factorial(n)

Vectors & Matrices

FunctionCommand
horizontal vector \(\begin{bmatrix}a & b & c\end{bmatrix}\)<a|b|c>
vertical vector \(\begin{bmatrix}a\\ b\\ c\end{bmatrix}\)<a,b,c>
matrix \(\begin{bmatrix}a & b & c\\ d & e & f\\ g & h & i\end{bmatrix}\)<<a|b|c>, <d|e|f>, <g|h|i>>
OR
<<a,d,g> | <b,e,h> | <c,f,i>>

Always check your answers using the preview hyperlink preview image icon before submitting them. This can be found near the entry box of any formula questions.

Be sure to read each question carefully and make sure that you understand how to enter your answer.