Rationalize the denominator.
A. 
(
+ 1)
B. 
(
- 1)
C. 
(
+ 1)
D. 
(
+ 1)
Answer: A
Mathematics
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Find 
by using logarithmic differentiation.y = (x3 + 1)2(x - 1)4x2
A. 
+ 
+ 
B. (x3 + 1)2(x - 1)4x2(2ln(x3 + 1) + 4ln(x - 1) + 2ln x)
C. (x3 + 1)2(x - 1)4x2
D. (x3 + 1)2(x - 1)4x2
Mathematics
Evaluate the line integral of f(x,y) along the curve C.f(x, y) = cos x + sin y, C: y = x, 0 ? x ? 
A. 0
B. 2
C. 2
D. 
Mathematics
Find the missing value and write a conclusion. If necessary, round the percentage to the nearest tenth.What percent of 50 is 20?
A. 192% of 50 is 20. B. 96% of 50 is 20. C. 40% of 50 is 20. D. 20% of 50 is 20.
Mathematics
Write as the sum and/or difference of logarithms. Express powers as factors. log13
A. log13n - log1312 - 
log13m
B. log1312 ? 
log13m ÷ log13n
C. log13(12
) - log13n
D. log1312 + 
log13m - log13n
Mathematics