
Teste 10ºAno
Authored by Sandra Trindade
Mathematics
10th Grade
Used 10+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1. Considera, num referencial ortonormado , a esfera definida pela condição:
Identifica o raio e as coordenadas do centro da esfera.
centro (-3,0,1) e raio 9
centro (-3,0,1) e raio 3
centro (3,0,-1) e raio 9
centro (3,0,-1) e raio 3
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Considera, num referencial ortonormado , a esfera definida pela condição:
Indica as equações dos planos tangentes à esfera e paralelos ao plano .
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Considera, num referencial ortonormado , a esfera definida pela condição: . O ponto (5,2,-1) pertence à esfera?
Sim
Não
4.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Num referencial o.n. xOy considera os pontos A(-1,-3) e M(0,-2).
Sendo M o ponto médio do segmento de reta [AB], indica as coordenadas de B.
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Considera num plano munido de um referencial o.n., xOy, uma circunferência e duas retas r e s, como se observa na figura.
Sabe-se que:
· A circunferência tem centro no ponto
· O ponto B(0,3) é ponto da circunferência;
· O ponto D pertence ao eixo Ox e tem a mesma abcissa do ponto A;
· A reta s é a mediatriz do segmento [BD].
A equação reduzida de reta s é:
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Em qual das opções pode estar representado, em referencial o.n., Oxy o conjunto de pontos definidos pela condição:
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Considere a esfera definida pela condição
Podemos afirmar que:
O ponto de coordenadas (-1, 1, 0) pertence à esfera.
O ponto de coordenadas (1, 1, 0) pertence à esfera.
A esfera tem centro (-2, 4, -6) e raio
A esfera tem centro (1, -2, 3) e raio
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