Use various trigonometric identities to simplify the expression then integrate.
cos 5? d?
A. 
sin 3? - 
sin 5? - 
sin 7? + C
B. 
sin 5? - 
sin 3? - 
sin 7? + C
C. 
sin 5? - 
sin 7? - 
sin 3? + C
D. 
sin 5? - 
sin 3? - 
sin 7? + C
Answer: D
Mathematics
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Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.
A. no solution B. (1, 3, 5) C. (1, 5, 3) D. (3, 5, 1)
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Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.
-6/7
A. 
7/6
B. 
6/7
C. 
D. 
7/6
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Fill in the blank with the correct inequality symbol, < or >, to make a true comparison statement.-3 _____ 0
A. -3 > 0 B. -3 < 0
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Evaluate.
A. 21 B. 6 C. 42 D. 3
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