Find the derivative.h(x) = 
A. ex + 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem.A rescue cable attached to a helicopter weighs 2 lb/ft. A 190-lb man grabs the end of the rope and is pulled from the ocean into the helicopter. How much work is done in lifting the man if the helicopter is 50 ft above the water?
A. 14,500 ft ? lb B. 9600 ft ? lb C. 12,000 ft ? lb D. 2690 ft ? lb
Mathematics
Multiply. Write the result in the form a + bi.(4 - 7i)(8 - 2i)
A. 14i2 - 64i + 32 B. 18 + 64i C. 18 - 64i D. 46 - 48i
Mathematics
Use the fundamental identities and appropriate algebraic operations to simplify the expression.sin2 x(cot2 x + 1)
A. -1 B. cos2 x + 1 C. tan2 x D. 1
Mathematics
Express the product as a sum or difference.cos 4x cos 8x
A. 
(cos 12x - sin 4x)
B. 
(cos 4x + cos 12x)
C. cos2 20x2
D. 
(cos 12x - cos 4x)
Mathematics