Calculator notation for symbolic questions includes a number of operators and functions.
Note
 Angles for trigonometric functions are expressed in radians.
 Answers are casesensitive; x and X are not the same.
 Do not type commas in numbers; 5,280 is not correct.
Notation  Keyboard  Example  Notes 

Addition  +  x + 1  
Subtraction    x  1
x 

Multiplication  *  4*x
4x 
Implicit multiplication is allowed. 
Division  /  x/4  
Exponents  ^
* 
x**3 or x^3  
Parentheses  ( )  4/(x + 1)
3(x + 1) 

Equal  =  y = 10  
Greater than  >  y > 10  
Less than  <  y < 10  
Greater than or equal to  >=  y >= 10  
Less than or equal to  <=  y <= 10  
Absolute value  abs()  abs(5) = 5  
Square root  sqrt()  sqrt(x/5)  
nth root  rootn()  root5(x  3)  
Factorial  !  5! = 120
(x  1)! 

Trigonometric functions 
sin() cos() tan() sec() csc() cot() 
sin(2x) atan(pi/4) cosh(y) 
Angles are expressed in radians.
Inverse and hyperbolic functions are also supported with notation like atan() and coth(). 
Greek letters (π, α, θ, ∆) 
pi alpha theta Delta 
2 pi x sin( alpha ) 2 theta Delta t 
3.14 is only an approximation of π and is not equivalent for grading. Type the name of a Greek letter in lowercase to enter the lowercase letter, or capitalize it to enter the capital letter. 
Scientific notation  e  1e3 = 1000  When entering scientific notation, always use a lowercase e and an integer exponent, for example, 1.23e5. 
Natural log  ln()  ln(x)  
Euler's number  exp()  exp(x)  Raises Euler's number to the specified power. For example, exp(2) = ${\mathit{e}}^{2}$. 
General log  log_b()  log_2(x + 5)  The specified base must be a natural number. 
Positive and negative infinity 
infinity infinity 
(infinity, 2] 

Degrees  deg  30 deg  
Radians  rad  pi/6 rad  
Subscripts  _  x_2 