Solve the problem.Find the tangent to y = cos x at x = 
.
A. y = - x - 
B. y = - x + 
C. y = 1
D. y = x + 
Answer: B
Mathematics
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Multiply or divide and write scientific notation for the result.
A. 5.6 × 107 B. 5.6 × 101 C. 2.8 × 107 D. 2.8 × 101
Mathematics
Simplify the expression. Leave answers with exponents.- 
3
A. - 
B. - 
C. - 
D. - 
Mathematics
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Mathematics
For the given geometric sequence, find the limit of the infinite series, if it exists. 
? 
n - 1
A. 3
B. No limit
C. 1
D. 
Mathematics