Simplify the expression.e3 ln x
A. 3x
B. ex3
C. 
D. x3
Answer: D
Mathematics
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Find the requested partial derivative.
at 
= 
if 
and 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.When an alternating current passes through a series RLC circuit, the voltage and current are out of phase by angle ?. Here ? = tan-1[(XL - XC)/R], where XL and XC are the reactances of the inductor and capacitor, respectively, and R is the resistance. Find d?/dR for constant XL and XC.
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Is 9 a solution of 3 ? x - 7 = 20?
A. Yes, 9 is the solution. B. No, 9 is not the solution.
Mathematics
Rewrite using exponential notation. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.
A. 
B. 
C. 
D. 
Mathematics