Determine if the following is an identity.(sin x + cos x)2 = 1
A. Not an identity
B. Identity
Answer: A
Mathematics
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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = csc(cot x)
A. y = csc u; u = cot x; 
= csc3 x cot x
B. y = cot u; u = csc x; 
= csc2(csc x) csc x cot x
C. y = csc u; u = cot x; 
= - csc(cot x) cot(cot x)
D. y = csc u; u = cot x; 
= csc(cot x) cot(cot x) csc2 x
Mathematics
Supply the missing numbers. 
A. 
0.4
B. 
4
C. 
4
D. 
0.4
Mathematics
Sketch the graph of the polar equation.r = 5
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality, then graph the solution.4x < 24
A. x < 20
B. x < 6
C. x > 6
D. x > 20
Mathematics