Find the derivative.y = 
+ 7 sec x
A. y ' = - 
- 7 csc x
B. y ' = - 
+ 7 sec x tan x
C. y ' = - 
+ 7 tan2x
D. y ' = 
- 7 sec x tan x
Answer: B
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A. -1.5, 1.5 B. 0 C. -3, 3 D. none
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A. f(x)
B. f(x)
C. f(x)
D. f(x)
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