Evaluate. Assume u > 0 when ln u appears. 
A. - 
(7x2 + 3)-4 + C
B. - 
(7x2 + 3)-4 + C
C. - 
(7x2 + 3)-6 + C
D. - 
(7x2 + 3)-6 + C
Answer: A
Mathematics
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Solve the given differential equation. (The form of yp is given.)D2y + 7Dy + 12y = 2x (Let yp = A + Bx.)
A. y = c1e-3x + c2e-4x + 
- 
x
B. y = c1e-3x + c2e-4x - 
+ 
x
C. y = c1e3x + c2e4x - 
+ 
x
D. y = c1e-3x + c2e-4x + 
x
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L'Hopital's rule does not help with the given limit. Find the limit some other way.
A. -1 B. ? C. 0 D. 1
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Find the product.4(-5)
A. 1 B. 20 C. -20 D. -1
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Solve for R1 if RT = 200 ê and R2 = 600 ê.
R1 ú R2 RT = ÄÄÄÄÄÄÄ R1 + R2 a. 800 ê b. 400 ê c. 300 ê d. 180 ê
Mathematics