Solve the equation for the interval [0, 2?).cos2 x - cos x = 0
A. 
, 
B. 0, 
, 
C. 0, 
, ?, 
D. 
, ?
Answer: B
Mathematics
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Use the trapezoidal rule and Simpson's rule to approximate the value of the definite integral. Please give the answer to four decimal places.
?
?
Trapezoidal rule: __________
?
Simpson's rule: __________
What will be an ideal response?
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
For the given functions f and g, find the requested composite function value.f(x) = 
, g(x) = 2x;
Find (f ? g)(4).
A. 2
B. 
C. 
D. 2
Mathematics
?
Find the cofactor C12 of the matrix.
?
A. C12 = -3 B. C12 = 2 C. C12 = 3 D. C12 = -2 E. none of these
Mathematics