Complex Numbers
Examples, solutions, videos, activities and worksheets that are suitable for A Level Maths.
FP1 Complex Numbers (Edexcel Further Pure Maths)
Basics - video on powers of i
Complex Numbers : Addition, Subtraction and Multiplication
Example:
z1 = 3 + 2i
z2 = 4 - 3i
Find:
1) z1 + z2
2) z1 - z2
3) 5z1
4) i2
5) z1z2
Expand the following:
1) i3
2) i4
3) 2i8 - (3i)2
4) (3 - 2i)4 FP1 Edexcel January 2013 Q2
Example:
z = 50/(3 + 4i)
Find in the form ai + b where a,b ∈ ℝ,
(a) z
(b) z2
Find
(c) |z|
(d) arg z2, giving your answer in degrees to 1 decimal place.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
Basics - video on powers of i
Example:
z1 = 3 + 2i
z2 = 4 - 3i
Find:
1) z1 + z2
2) z1 - z2
3) 5z1
4) i2
5) z1z2
Expand the following:
1) i3
2) i4
3) 2i8 - (3i)2
4) (3 - 2i)4 FP1 Edexcel January 2013 Q2
Example:
z = 50/(3 + 4i)
Find in the form ai + b where a,b ∈ ℝ,
(a) z
(b) z2
Find
(c) |z|
(d) arg z2, giving your answer in degrees to 1 decimal place.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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