Find the natural domain of the function.f(x, y) = cos-1(x2 + y2)
A. All points in the x-y plane satisfying x2 + y2 ? 1
B. All points in the x-y plane
C. All points in the x-y plane satisfying x2 + y2 ? 1
D. All points in the x-y plane except (0, 0)
Answer: C
You might also like to view...
Graph the function.y = sin 
x 
A. 
B. 
C. 
D. 
A manufacturing company wants to maximize profits on products A, B, and C. The profit margin is $3 for A, $6 for B, and $15 for C. The production requirements and departmental capacities are as follows: 
What are the constants in the model?
A. 30,000, 38,000, 28,000 B. 3, 6, 15 C. 1, 2, 2 D. 2, 3, 3
Find an equation for the hyperbola described. Graph the equation.Center at (0, 0); focus at (5, 0); vertex at (3, 0)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Evaluate the polynomial function for the given value of the variable.Find P(-2): P(x) = -7x3 - 6x2 - 8x - 7
A. 41 B. 57 C. 51 D. -103