MathsNet: C - Complex Numbers - Division

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Page ID: 1528

C | Complex Numbers | Complex algebra | «Division»

To divide two complex numbers, multiply by the complex conjugate of the denominator.

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Summary/Background

A note about graphic calculators
A graphic calculator, for example the TI-83 or similar model, can work with complex numbers.

complex number conversions

complex number conversions

complex number mode

First select MODE and move down to select a+bi:
Then press 2nd QUIT and enter a complex number sum.

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This question appears in the following syllabi:

Syllabus	Module	Section	Topic	Exam Year
AQA A-Level (UK - Pre-2017)	FP2	Complex Numbers	Complex algebra	-
AQA AS Further Maths 2017	Pure Maths	Complex Number Basics	Complex Algebra	-
AQA AS/A2 Further Maths 2017	Pure Maths	Complex Number Basics	Complex Algebra	-
CBSE XI (India)	Algebra	Complex Numbers and Quadratic Equations	Imaginary unit	-
CCEA A-Level (NI)	FP1	Complex Numbers	Complex algebra	-
CIE A-Level (UK)	P3	Complex Numbers	Complex algebra	-
Edexcel A-Level (UK - Pre-2017)	FP1	Complex Numbers	Complex algebra	-
Edexcel AS Further Maths 2017	Core Pure Maths	Complex Numbers	Complex Algebra	-
Edexcel AS/A2 Further Maths 2017	Core Pure Maths	Complex Numbers	Complex Algebra	-
I.B. Higher Level	1	Complex Numbers	Complex algebra	-
Methods (UK)	M3	Complex Numbers	Complex algebra	-
OCR A-Level (UK - Pre-2017)	FP1	Complex Numbers	Complex algebra	-
OCR AS Further Maths 2017	Pure Core	Complex Number Basics	Complex Algebra	-
OCR MEI AS Further Maths 2017	Core Pure A	Complex Number Basics	Complex Algebra	-
OCR-MEI A-Level (UK - Pre-2017)	FP1	Complex Numbers	Complex algebra	-
Pre-U A-Level (UK)	7	Complex Numbers	Complex algebra	-
Scottish Advanced Highers	M2	Complex Numbers	Complex algebra	-
Scottish (Highers + Advanced)	AM2	Complex Numbers	Complex algebra	-
Universal (all site questions)	C	Complex Numbers	Complex algebra	-
WJEC A-Level (Wales)	FP1	Complex Numbers	Complex algebra	-