Evaluate the expression without using a calculator, or state that the value does not exist. Simplify the answer to the extent possible.sech-1(ln 6)
A. 
B. 
C. 
D. does not exist
Answer: D
Mathematics
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Add or subtract. Then simplify by collecting like radical terms, if possible.13 
+ 7 
A. 20 
B. 20 
C. -6 
D. 20 
Mathematics
Find the standard form of the equation of the parabola with focus (0,0) and directrix y=6
a. 
b. 
c. 
d. 
Mathematics
Differentiate.f(x) = (5x3 + 8)(2x7 - 8)
A. f'(x) = 20x9 + 112x6 - 120x2 B. f'(x) = 20x9 + 112x6 - 120x C. f'(x) = 100x9 + 112x6 - 120x2 D. f'(x) = 100x9 + 112x6 - 120x
Mathematics
Find the indicated vector.Let u = 3i, v = i + j. Find 2u - v.
A. 5i - 2j B. 5i - j C. i - 5j D. 11i + j
Mathematics