Use the graph to complete the identity.
= ? 
A. cot 3x + cot 7x
B. -tan 2x
C. 2 tan 5x tan 2x
D. tan 5x
Answer: B
Mathematics
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Find the Jacobian 
or 
(as appropriate) using the given equations.
A. 720v B. 1200u C. 1200v D. 720u
Mathematics
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log5
A. log5 25 - log5 
B. 2 - 
log5(x - 1)
C. 2 - log5 
D. 2 log5 5 - 
log5(x - 1)
Mathematics
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 
B. 
C. 6y(y + 3)
D. 
Mathematics
Simplify the expression.9z0 when z = 2
A. 9 B. 18 C. 0 D. 1
Mathematics