HP Prime Graphing Wireless Calculator Manuel d'utilisateur Page 495

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pade
Returns the Pade approximation of an expression, i.e. a rational fraction P/Q such that P/Q=Expr mod x^(n+1)
or mod N with degree(P)<p.
pade(Expr, Var, Integern, Integerp)
Example:
pade(exp(x), x, 5, 3) returns
part
Returns the nth subexpression of an expression.
part(Expr, Integer)
Examples:
part(sin(x)+cos(x),1) returns sin(x)
part(sin(x)+cos(x),2) returns cos(x)
peval
Given a polynomial dened by a vector of coeicients, and a real value n, evaluates the polynomial at that
value.
peval(Vector, Value)
Example:
peval([1,0,-2],1) returns -1
PI
Inserts π.
PIECEWISE
Used to dene a piecewise-dened function. Takes as arguments pairs consisting of a condition and an
expression. Each of these pairs denes a sub-function of the piecewise function and the domain over which it
is active.
PIECEWISE
Example:
PIECEWISE
Note that the syntax varies if the Entry setting is not set to Textbook:
PIECEWISE(Case1, Test1, ...[ Casen, Testn])
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