pre cal
What is the center and radius of the circle indicated by the equation?(x−2)2+y2=36
(2,0), r=6
(−2,0), r=36
(−2,0), r=6
(2,0), r=36
Correct answer:
(2,0), r=6
f(x)=3x4+7x2−1
This function is:
A symmetric about the x-axis
B symmetric about the y-axis
C symmetric about the origin
D not symmetric
Correct answer:
symmetric about the y-axis
1+1
2
What is the shape of the graph indicated by the equation?
x216+y24=1
Parabola
Hyperbola
Circle
Ellipse
Ellipse
2-1
1
Find the vertex (x,y) for a parabola with equation y=3x2−6x+1
A (2,−1)
B (1,1)
C (1,−2)
D (1,3)
E (1,2)
Correct answer:
(1,−2)
4x4
16
What is the minimal value of
2x2+16x−7 over all real numbers?
A No minimum value.
B −10
C −39
D 2
E 0
Correct answer:
−39
5x5
25
Consider the function
f(x)=x2−x Find the maximum of the function on the interval [0,1].
0.5
0
1
−1
−0.5
Correct answer:
0
12 to the 2nd power
144