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14-18 Sistema de Álgebra Computacional (CAS)
Ou, se você tiver definido F(X) utilizando DEF, ou seja,
se você tiver digitado:
então, digite:
DERVX(F(X))
Simplifique o resultado para obter:
DIVPC Divisão em potências crescentes
DIVPC tem três argumentos: dois polinômios A(X) e B(X)
(no qual B(0)
0), e um número inteiro n.
DIVPC retorna o quociente Q(X) da divisão de A(X) por
B(X), por expoente crescente, e com deg(Q) <= n ou Q =
0.
Então, Q[X] é a expansão limitada (à ordem n) de:
na vizinhança de X=0.
Digitar:
DIVPC(1+X
2
+X
3
,1+X
2
,5)
resulta:
OBSERVAÇÃ
O:
Quando a calculadora solicitar uma mudança para o
modo de potências crescentes, responda sim.
FOURIER coeficientes da série de Fourier
FOURIER tem dois parâmetros: uma expressão f(x) e um
número inteiro N.
FOURIER retorna o coeficiente da série de Fourier c
N
de
f(x), considerada uma função definida no intervalo [0, T]
e com período T (T sendo igual ao conteúdo da variável
PERIOD).
DEF(F(X)
X
X
2
1
---------------
LN
X 1+
X 1
-------------
⎝⎠
⎛⎞
+=
3 x
2
1
x
4
2 x
2
1+
---------------------------------
AX[]
BX[]
------------
1 x
3
x
5
+
214


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