Simplify the root. 
A. x
B. |x|
C. 
D. -x
Answer: B
Mathematics
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Use differentiation to determine whether the integral formula is correct.
dx = -x cos x + sin x + C
A. Yes B. No
Mathematics
Determine i) the domain of the function, ii) the range of the function, iii) the domain of the inverse, and iv) the range of the inverse.f(x) = 2x + 5
A. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
B. f(x): D is all real numbers, R is all real numbers;
f-1(x): D is all real numbers, R is all real numbers
C. f(x): D is all real numbers, R = 
;
f-1(x): D is all real numbers, R = 
D. f(x): D = 
, R is all real numbers;
f-1(x): D = 
, R is all real numbers
Mathematics
Find the distance d(P1, P2) between the points P1 and P2.
A. 2
B. 12
C. 12
D. 2
Mathematics
Evaluate.
, when p = 72 and q = 9
A. 32 B. 256 C. 252 D. 36
Mathematics