Use implicit differentiation to find dy/dx and d2y/dx2.x2 + y2 = 5, at the point (2, 1)
A. 
= - 2; 
= 1
B. 
= 2; 
= 5
C. 
= - 2; 
= -5
D. 
= - 
; 
= 0
Answer: C
Mathematics
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Find the point(s) of intersection of the curves r = 2 and r = 4cos?.
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Evaluate the expression.
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.(
+ 
)(
- 
)
A. 11 - 2
B. 11z
C. 11 - z
D. 11 - 2
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