Establish the identity.tan 2 u (1 + cos(2u)) = 1 - cos(2u)
What will be an ideal response?
tan 2 u (1 + cos(2u)) = 
(1 + cos(2u)) = 1 - cos(2u)
Mathematics
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At what points is the given function continuous?f(x, y, z) = 
A. All (x, y, z) such that x2 + y2 ? 81 B. All (x, y, z) such that x2 + y2 ? 0 C. All (x, y, z) D. All (x, y, z) such that x2 + y2 ? 9
Mathematics
Solve the equation on the interval [0, 2?).sin 2x + sin x = 0
A. 0, 
, ?, 
B. 
, 
, 
, 
C. 
, 
D. no solution
Mathematics
Solve the rational equation. Check for extraneous solutions.
+ 
= 
A. {0} B. {?} C. {-1} D. {1}
Mathematics
Solve for the unknown in the equation.3(B + 5) = 5B + 15
A. B = 30 B. B = 15 C. B = -15 D. B = 0
Mathematics