?Find , , and  of the functions

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?

A. ?, , and 
B. ??, , and 
C. ??, , and 
D. ??, , and 
E. ??, , and 

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Answer: A

Mathematics

A certain tree grows by 2/t + e(-t2/2) feet per year, where t is the time in years. Use Simpson's rule with whole year intervals to estimate the total growth during the stated time interval.From t = 1 to t = 6

A. 5.307 ft B. 3.948 ft C. 6.036 ft D. 5.922 ft

Solve the problem. Round your answer, if appropriate.The radius of a right circular cylinder is increasing at the rate of , while the height is decreasing at the rate of . At what rate is the volume of the cylinder changing when the radius is 6 in. and the height is 13 in.?

A. -102 in.3/sec B. 612? in.3/sec C. 144 in.3/sec D. 144? in.3/sec

Find the exact value of the expression.

A. - 
B. -2
C. - 
D. -

Write a chain rule formula for the following derivative. for u = f(v); v = h(s, t)

A.  =   
B.  =   
C.  =  
D.  =