
TEST FACOLTA' SCIENTIFICHE DEL 14 MARZO
Authored by MARCO GIAMPETRUZZI
Mathematics
University
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23 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
L’espressione presentata è uguale a:
a
a-1
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Un triangolo rettangolo ha area pari a 6 cm2 e angolo α tra cateto minore e ipotenusa tale che cos α = 3 / 5. L’ipotenusa del triangolo ha lunghezza pari a:
6
6
5
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sia 0 < x < 2π. Quali sono i valori di x per cui cos x + sen x = 0?
x = 3π / 2
x = 3π 4, x =7π/4
x =3π/4, x =5π/4
x =π/4, x = 7π/ 4
x = π/2, x = 3π/2
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
L’espressione [1 – tan α · sen α · cos α]1/2 può essere semplificata come:
1
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
L’ellisse x2 /9 + y2 = 1 ha un fuoco nel punto:
(0,2)
(2,0)
(0,3)
(3,0)
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Per quali valori del parametro k le due rette 2x + 3y + 2 = 0 e 4x + ky – 1 = 0
sono tra di loro parallele?
6
3
3/2
1/6
8/3
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Quale tra le seguenti equazioni rappresenta un’ellisse tangente alla
retta x = 3 e passante per il punto (√3, 1)?
x2 + 6y2 = 9
2x2 + 3y2 = 3
x2 + 9y2 = 1
6x2 + 3y2 = 1
x2 + 2y2 = 9
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