Provide an appropriate response.If a > 0, which of the following correctly describes - 
?
A. Positive
B. Zero
C. Negative
D. Not real
Answer: D
Mathematics
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Find the Jacobian 
or 
(as appropriate) using the given equations.
A. 32
B. - 
C. -45
D. 
Mathematics
Solve the problem.For a certain electric circuit, the current i (in A) in terms of the voltage E and resistance R (in ?) is given by 
. Find the current for E = 1.5 V and R = 1.09 ?. Round your answer to two decimal places.
A. 0.62 A B. 11.19 A C. 1.12 A D. 0.11 A
Mathematics
Establish the identity.cot(x + y) cot(x - y) = 
What will be an ideal response?
Mathematics
Evaluate the expression.-110
A. -11 B. -1 C. 0 D. 1
Mathematics