Solve the problem.Suppose that the velocity of a falling body is v = ks2 (k a constant) at the instant the body has fallen s meters from its starting point. Find the body's acceleration as a function of s.
A. a = 2ks3
B. a = 2ks2
C. a = 2ks
D. a = 2k2s3
Answer: C
Mathematics
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Find Dxy.y = (1 - 3x) coth-1 
A. 
- 3 tanh-1 
B. - 
x
C. 
- 3 coth-1 
D. (1 - 3x) coth-1 
Mathematics
Establish the identity.
= cot ? - tan ?
What will be an ideal response?
Mathematics
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.(-4 + 9i) - 2
A. -2 + 9i B. -2 - 9i C. 6 - 9i D. -6 + 9i
Mathematics
Simplify the expression.7
? 
- 
A. 21
B. 24
C. 3
D. 18
Mathematics