Express the given complex number in polar form.5.79e2.85j
A. 5.79 ( cos 331.7° + j sin 331.7°)
B. 2.85 ( cos 331.7° + j sin 331.7°)
C. 2.85 ( cos 163.3° + j sin 163.3°)
D. 5.79 ( cos 163.3° + j sin 163.3°)
Answer: D
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Calculate the derivative of the function. Then find the value of the derivative as specified.
t = -1 if s = t2 - t
A. 
= 2t + 1; 
t = -1
= -1
B. 
= 2t - 1; 
t = -1
= -3
C. 
= t - 1; 
t = -1
= -2
D. 
= 2 - t; 
t = -1
= 3
Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.10x2 - 4xy + 6y2 - 8x + 8y = 0
A. x = 
(x' - y') and y = 
(x' + y')
B. x = 
x' - 
y' and y = 
x' + 
y'
C. x = 
x' - 
y' and y = 
x' + 
y'
D. x = -y' and y = x'
Use a calculator to find the function value to four decimal places.tan (0.57)
A. 0.8419 B. 1.1878 C. 0.5396 D. 0.6410
Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.log2
A. 8 log2x + 7 log2y + log25 B. (8 log2x)(7 log2y) - log25 C. 8 log2x - 7 log2y - log25 D. 8 log2x + 7 log2y - log25