Use logarithmic differentiation to find the derivative of y.y = x(x - 3)(x - 9)
A. x(x - 3)(x - 9)
B. x(x - 3)(x - 9)(lnx + ln(x - 3) + ln(x - 9))
C. 1
D. 
+ 
+ 
Answer: A
Mathematics
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A. 
?
B. 
?
C. 
?
D. 
?
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The quantity Q of charge in coulombs C that has passed through a point in a wire up to time t (measured in seconds) is given by 
Find the current when t=1s.
a. 24 b. 15 c. 18 d. 26 e. 1
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Decide whether the given sequence is finite or infinite.a1= 3, a2= 8; for 3 ? n ? 10, an= 4?an-1+ 7?an-2
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Write the complex number in rectangular form.4 cis 135°
A. 4
+ 2i
B. -2
+ 2i
C. 4
- 2i
D. 2
- 2i
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