HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 414)

100

101

partfrac(x/(4-x^2)) returns (-1/2)/(x-2)-(1/2)/((x+2)

Algebra – Extract

Numerator

Simplied Numerator. For the integers a and b, returns the numerator of the fraction a/b after simplication.

numer(a/b)

Example:

numer(10/12) returns 5

Denominator

Simplied Denominator. For the integers a and b, returns the denominator of the fraction a/b after

simplication.

denom(a/b)

Example:

denom(10/12) returns 6

Left Side

Returns the left side of an equation or the left end of an interval.

left(Expr1=Expr2) or left(Real1..Real2)

Example:

left(x^2-1=2*x+3) returns x^2-1

Right Side

Returns the right side of an equation or the right end of an interval.

right(Expr1=Expr2) or right(Real1..Real2)

Example:

right(x^2-1=2*x+3) returns 2*x+3

Calculus

Dierentiate

With one expression as argument, returns derivative of the expression with respect to x. With one expression

and one variable as arguments, returns the derivative or partial derivative of the expression with respect to

the variable. With one expression and more than one variable as arguments, returns the derivative of the

expression with respect to the variables in the second argument. These arguments can be followed by $k (k is

an integer) to indicate the number of times the expression should be derived with respect to the variable. For

example, di(exp(x*y),x$3,y$2,z) is the same as di(exp(x*y),x,x,x,y,y,z).

diff(Expr,[var])

diff(Expr,var1$k1,var2$k2,...)

366 Chapter 22 Functions and commands

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