Simplify the factorial expression.
A. 
B. 
C. 2n - 1
D. 2n
Answer: B
Mathematics
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Find all the first order partial derivatives for the following function.f(x, y) = 
A. 
= 
; 
= - 
B. 
= 
; 
= - 
C. 
= - 
; 
= - 
D. 
= 
; 
= 
Mathematics
Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 0.00142857 B. 700 C. 100 D. 0.07
Mathematics
Find the exact value of the trigonometric expression without the use of a calculator.If sin ? = - 
, 
< ? < 2? and cos ? = - 
, ? < ? < 
, find the exact value of sin (? - ?).
A. 
B. 
C. 
D. 
Mathematics
Add the given pair of complex numbers geometrically.z1 = -4 - 9i, z2 = 9 + 7i
A. 0 + 2i B. 0 - 2 C. 5 + 2i D. 5 - 2i
Mathematics