Decide whether the expression is or is not an identity.
= 1 - cos x
A. Identity
B. Not an identity
Answer: B
Mathematics
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Perform the indicated operation. Write the answer in scientific notation.(9.5 × 10-3)(4.9 × 106)
A. 4.655 × 104 B. 1.61 × 103 C. 4.655 × 103 D. 14.4 × 109
Mathematics
Find the integral.
A. 9x ln x - x + C B. x ln 9x - 9x + C C. x ln 9x + x + C D. x ln 9x - x + C
Mathematics
Solve the inequality.x2 + 5x - 14 > 0
A. (2, ?) B. (-?, -7) or (2, ?) C. (-7, 2) D. (-?, -7)
Mathematics
Solve.4x + 5 = -11
A. -4
B. -20
C. - 
D. - 
Mathematics