Use logarithmic differentiation to find the derivative of y.y = 
A. 
B. 
C. 
(lnx - ln(x + 7))
D. 
Answer: D
Mathematics
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Prove the identity.tan 2 u (1 + cos 2u) = 1 - cos 2u
What will be an ideal response?
Mathematics
Solve the inequality and graph the solution.m - 2(m + 5) < 4m
A. (-?, 1)
B. (1, ?)
C. (-2, ?)
D. (-?, -2)
Mathematics
Factor the four-term polynomial by grouping.4xy - 20x + 7y - 35
A. (4x - 5)(y + 7) B. (4x + y)(7y - 5) C. (4x + 7y)(y - 5) D. (4x + 7)(y - 5)
Mathematics
Use the addition property of inequality to solve the inequality and graph the solution set on a number line.8x + 4 > 7x - 1
A. (-5, ?)
B. (-?, -5)
C. (-?, 3]
D. [3, ?)
Mathematics