Decide whether the equation is or is not an identity.sin (A + B) sin (A - B) = sin2A - sin2B
A. Not an identity
B. Identity
Answer: A
Mathematics
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Find the derivative.p = 
A. 
= - 
B. 
= 
C. 
= 
D. 
= - 
Mathematics
Solve the problem.Determine whether the ordered triple (2, 9, -4) is a solution of the system of equations.2x - 5y - 9z = -5 x + y + z = 73x - y + 5z = 35
A. No B. Yes
Mathematics
Solve the equation.
= 5
A. 2 B. 10 C. 7 D. 6
Mathematics
Find the indefinite integral.
?
?
A. 
B. 
C. 
D. 
Mathematics