Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
A. not a function
B. function
Answer: B
Mathematics
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Solve the inequality and write the solution set in interval notation.1 - ex ? 0
A. [0, ?) B. (-?, 0) C. (-?, 0] D. (0, ?)
Mathematics
Prove the identity.
= 
What will be an ideal response?
Mathematics
Use a graphing utility to graph the curve defined by the given parametric equations.x = t + 2, y = 3t - 1; 0 ? t ? 3
A. 
B. 
C. 
D. 
Mathematics
Use the fundamental identities and appropriate algebraic operations to simplify the expression.
- tan x
A. tan x B. tan2 x C. csc x D. cot x
Mathematics