El valor de x en las expresiones log3 x = −2 y log2 32 = x es, respectivamente:
EVALUACIÓN INICIAL MATEMÁTICAS II BACHILLERATO

Quiz
•
Mathematics
•
12th Grade
•
Hard
Jesús Ayuso Alía
Used 32+ times
FREE Resource
16 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
1/9 y 5
-3 y 2
1/9 y 30
1/3 y 4
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Las raíces del polinomio P(x) = x5 + 5x4 + 4x3 − 4x2 + 3x − 9 son:
x = −1, x = 1 (doble), x = 3 (doble)
x = −1 (doble), x = 1 (doble), x = 3
x = − 1, x = 1, x = − 3 (doble)
x = 1, x = − 3 (doble)
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
El conjunto de soluciones de la inecuación: x2 + 2x > 0 es:
x < 0
x ∈(−∞, − 2) ∪ (0, + ∞)
x ∈(−∞, 0) ∪ (2, + ∞)
x > 0
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Las soluciones de la ecuación 4x − 7 · 2x = 8 son:
x = 1, x = 8
x = −1, x = 8
x = 0, x = 3
x = 3
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
El resultado del cociente (2 − 4i)/(1+ 3i)
es:
2 −(4/3)i
2 − i
−1 − i
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Las cantidades (entre 0º y 360º) de la ecuación 2cos(3x) = 1 son:
60°, 120°, 240° y 300°
100°, 130°, 160° y 190°
20°, 150°, 210°, 330° y 340°
20°, 100°, 140°, 220°, 260° y 340°
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
El lado de un pentágono regular inscrito en una circunferencia de radio 5 cm mide aproximadamente:
5,24 m
5,62 m
5,88 m
5,96 m
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