Find the focus and directrix of the parabola with the given equation.x2 = 8y
A. focus: (0, -2)
directrix: x = -2
B. focus: (0, 2)
directrix: y = -2
C. focus: (2, 0)
directrix: y = 2
D. focus: (2, 0)
directrix: x = 2
Answer: B
Mathematics
You might also like to view...
Evaluate the integral.
A. - 
+ 
tan-1 
+ C
B. 
+ 4tan-1
+ C
C. - 
+ 
ln
+ C
D. - 
+ 
tan-1
+ C
Mathematics
Express the vector as a product of its length and direction.2j
A. 2j
B. 2
C. 2(2j)
D. 
j
Mathematics
Determine whether or not the function is one-to-one.f(x) = 
A. Yes B. No
Mathematics
Simplify.(-6x4)(-6x3)
A. -12x7 B. 36x7 C. -36x12 D. -12x12
Mathematics