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Unformatted text preview: MAC 1114 Module Test 10 Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Perform the indicated operations. Simplify the answer. 1)- 11 · - 11 A) 11i B) 11 C)- 11i D)- 11 In work with alternating current, complex numbers are used to describe current I, voltage E, and impedance Z. These three quantities are related by the equation E = IZ. Solve the equation E = IZ for the missing variable. 2) I = 7 + 2i, Z = 5 + 4i A) E = 27 + 38i B) E = 35 + 46i C) E = 35 + 8i D) E = 43 + 38i Find the quotient. Write the answer in standard form. 3) 8 + 4i 6- 9i A) 4 39 + 32 39 i B) 28 13 + 16 13 i C)- 4 45 + 32 45 i D)- 28 15 + 32 45 i Identify the number as real, complex, pure imaginary, or none of these. More than one of these descriptions may apply. 4)- 2 A) Complex B) Real, complex C) Complex, pure imaginary D) None of these Indicate whether the statement is true always, sometimes, or never....
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- Summer '08
- Trigonometry, Complex number, Imaginary unit, Imaginary number