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13-6 Como utilizar funções matemáticas
Exemplo
-(1,2) retorna (-1,-2)
Potência (x elevado a y). Também aceita números
complexos.
valor^potência
Exemplo
2^8 retorna 256
ABS Valor absoluto. Para um número complexo, é .
ABS(valor)
ABS((x,y))
Exemplo
ABS(–1) retorna 1
ABS((1,2)) retorna 2,2360679775
Obtém a n-ésima raiz de x.
raiz NTHROOT valor
Exemplo
3 NTHROOT 8 retorna 2
Funções para cálculo
Os símbolos para cálculo de diferenciais e integrais
estão disponíveis diretamente no teclado— e S
,
respectivamente—e no menu MATH.
Diferencia a expressão com base na variável de
diferenciação. Na linha de comando, utilize um nome
formal (S1, etc.) para um resultado não numérico.
Consulte “Como determinar derivadas” na página 13-
23.
variável(expressão)
Exemplo
s1(s1
2
+3*s1) retorna 2*s1+3
Integra a expressão do limite inferior para o superior,
com base na variável de integração. Para determinar a
integral definida, ambos os limites devem ter valores
numéricos (ou seja, devem ser variáveis reais ou
x
2
y
2
+
n
172


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