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If (x+ iy)2 -98 i, then x and y are: A) x +1; y = ±1 E) x = +5; y = 15 B) x = +2;y = ±2 F) x = +6; y = C) x = ±3; y = +3 G) x = ±7;y = +7 D) x +4;y = ±4 H) x = +8; y = +8 +6

If (x+ iy)2 -98 i, then x and y are: A) x +1; y = ±1 E) x = +5; y = 15 B) x = +2;y = ±2 F) x = +6; y = C) x = ±3; y = +3 G) x = ±7;y = +7 D) x +4;y = ±4 H) x = +8; y = +8 +6

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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3 Question If (x + iy)? = -98 i, then x and y are: A) x = +1;y = ±1 E) x = +5;y = 15 B) x = +2; y = ±2 F) x = +6; y = +6 C) x = +3;y = +3 G) x = +7; y = +7 D) x = +4; y = +4 H) x = +8; y = +8 4 Question * If Z = a – ai , where a is a real positive number, then Arg(Z²) is: A) 135 E) -90 B) -135 F) 180 C) -45 G) -48.4336 D) 45 H) 2.1747
Transcribed Image Text:3 Question If (x + iy)? = -98 i, then x and y are: A) x = +1;y = ±1 E) x = +5;y = 15 B) x = +2; y = ±2 F) x = +6; y = +6 C) x = +3;y = +3 G) x = +7; y = +7 D) x = +4; y = +4 H) x = +8; y = +8 4 Question * If Z = a – ai , where a is a real positive number, then Arg(Z²) is: A) 135 E) -90 B) -135 F) 180 C) -45 G) -48.4336 D) 45 H) 2.1747
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