
Função exponencial
Authored by ANDERSON AIMI
Mathematics
8th - 10th Grade
Used 25+ times

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16 questions
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1.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
A massa de substancia radioativa numa dada amostra é dada pela fórmula:
Com t em anos e A(t) em miligramas.
Quantos miligramas havia no início da contagem do tempo?
Introduz o valor correto, sem unidades, por ex. 150
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual o valor da função
no instante inicial x=0
300
1.16
.16
x
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é o ponto de interseção com o eixo OY?
(0,0)
(0,3)
(3,0)
(1,1)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o domínio da função f(x) = 5x?
[5, + [
]- , 5]
|R
|R \ {5}
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Da seguinte fução y=ax (com a>1) sabemos de certeza que:
não tem assintotas
não tem zeros
não tem domínio |R
não é estritamente crescente
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a assintota horizontal da função y = 2x ?
y = 0
x = 0
y=2
x=2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O número de formigas numa determinada colónia está a decrescer e segue o seguinte modelo matemático f,
, onde t é o número de dias a contar do primeiro dia em que houve o decréscimo. Faz uma estimativa para o número de formigas ao fim de 20 dias.
49
49,3
623
623,8
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