HP Prime Graphing Wireless Calculator - Manual (Page 186)

182 Functions and commands
Dirac Returns the value of the Dirac delta function for a real number.
Dirac(Real)
Example:
Dirac(1)
gives
0
e Enters the mathematical constant e (Euler’s number).
egcd Given two polynomials, A and B, returns three polynomials U,
V and D such that:
U(x)*A(x)+V(x)*B(x)=D(x),
where D(x)=GCD(A(x),B(x)), the greatest common
divisor of polynomials A and B.
The polynomials can be provided in symbolic form or as lists
of coefficients in descending order.
Without a third argument, it is assumed that the polynomials
are expressions of x. With a variable as third argument, the
polynomials are expressions of it.
egcd((PolyA, PolyB, [Var]) or egcd(ListA,
ListB, [Var])
Example:
egcd((x-1)^2,x^3-1)
gives
[-x-2,1,3*x-3]
eigenvals Returns the sequence of eigenvalues of a matrix.
eigenvals(Matrix)
Example:
eigenvals
returns [
3 -3 -3]
eigenvects Returns the eigenvectors of a diagonalizable matrix.
eigenvects(Matrix)
Example:
eigenvects returns
2 – 2 – 1
2 – 1 2 –
1 2 – 2 –  
 
 
 
 
2 – 2 – 1
2 – 1 2 –
1 2 – 2 –  
 
 
 
 
1 3 – 3 –
2 – 0 3 –
1 3 3 –