Solve the equation.
x+1= 
x-1
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Obtain the Cartesian equation of the curve by eliminating the parameter.x = 5 tan ?, y = 4 cot ?
A. y = 
cos x
B. 
= 20
C. xy = 20
D. y = 
sin x
Mathematics
Answer the question.True or False.Every integer is an irrational number.
Answer the following statement true (T) or false (F)
Mathematics
Find the interval of convergence of the series.
A. 1 ? x < 3
B. - 
< x < 
C. -6 < x < 10
D. -6 ? x ? 10
Mathematics
Solve the equation.
= 7
A. {12} B. {24} C. {-24} D. {48}
Mathematics