Quiz
Reckon: Mathematics
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Perguntas do quiz (13)
1The two functions f and g defined by f(x) = 3x + 3 for x real and g(t) = 3t + 3 for t real and positive are equal?
- AVerdadeiro
- BFalso
2If functions f and g have domains Df and Dg respectively, then the domain of f / g is given by
- AThe union of Df and Dg
- BThe intersection of Df and Dg
- CThe intersection of Df and Dg without the zeros of function g
- DNone of the above
3The graph of f(x) and that of f(x + 2) are the same.
- AVerdadeiro
- BFalso
4Let the closed interval [a , b] be the domain of function f. The domain of f(x - 3) is given by
- Athe open interval (a , b)
- Bthe closed interval [a , b]
- Cthe closed interval [a - 3 , b - 3]
- Dthe closed interval [a + 3 , b + 3]
5Let the interval (a , +infinity) be the range of function f. The range of f(x) - 4 is given by
- Athe interval (a - 4 , +infinity)
- Bthe interval (a + 4, +infinity)
- Cthe interval (a, +infinity)
- DNone of the above
6The equation y = | x | , with y >= 0, represents y as a function of x.
- AVerdadeiro
- BFalso
7The equation x = | y | , with x >= 0, represents y as a function of x.
- AVerdadeiro
- BFalso
8(x+4)^2+(y−6)^2 =48
What is its center?- A(4,6)
- B(-4,-6)
- C(-4,6)
- D(4,-6)
9(x+9)^2+(y−46)^2 =123
What is its radius?- A11.09
- B6.78
- C3
- D12.34
10(x−0.5)^2+(y−3.5)^2=16
The center is (0.5, 3.5)- AVerdadeiro
- BFalso
11Fill in the blanks with the correct answers.
center (0,5) r=4
x^2+(y-5)^2=[blank_start]16[blank_end]- A16
12Center(2,-3) r=[blank_start]3[blank_end]
(x-2)^2+(y+3)^2=9- A3
13FOCI: The formula in solving a>b is c^2=b^2-a^2
- AVerdadeiro
- BFalso
Informações
- Descrição
- Test your skills. Be smart
- Autor
- Lyzandra Andrade
- Idioma
- English
- Visualizações
- 81
- Histórico
- Criado em 5 out 2016 · atualizado em 6 out 2016
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