Solve.cot-1 x + cot-1 (1 + x) = 
A. x = ± 
B. x = 2
C. x = -5 + 3
D. x = 
Answer: B
Mathematics
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Determine whether the given function satisfies a Laplace equation.f(x, y) = cos(x) sin(-y)
A. Yes B. No
Mathematics
Answer the question.The code for some garage door openers consists of 12 electrical switches that can be set to "+" , "0" , or "-" by the owner. With this type of opener, how many different codes are possible?
A. 531,193 B. 531,441 C. 532,701 D. 530,241
Mathematics
Find the perimeter of the figure.
A. 52 m B. 36 m C. 98 m D. 480 m
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 16
C. 
D. 7
Mathematics