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The following applet shows how to multiply and add complex numbers (vectors
in the plane). See instructions below. Hit help twice to go to a lesson on
complex numbers.
For multiplication, add the angles and multiply the lengths
to get the product. Hit the button C=A*B twice to turn on and off the arc
illustration of angle addition. The illustration works best when both factors
are in the first quadrants. Hit the button C=A+B to again and again to alternate
between illustrations of the head-to-tail method and the component method for
vector addition. Now experiment or play. The help button will take you away from
this web directory to another explanation of complex numbers. | |
Algebra, Odds & Ends,
1. Hints for Exams
2A. Exact Arithmetic
2B. Fractions Briefly
3. What is a Variable?
4.. Square Roots
5. Straight Lines
6. Problem Solving Methods
7. Trig and Complex No.
8. Complex Applet
9. History of No.s
10. ln(x) and exp(x)
13. Rename the > Sign
14. Problems: Quadratics
15. Problems: Algebra Test
16. Problems: Linear Eqns I
17. Problems: Linear Eqns II
18. Problem Solving Hints
20. Independent Variables
21. Why Logic
22. Why Math
23. The 15 Times Table
24. The 20 Times Table
25. Algebra Formulas
26. On Learning Maths
27. Maths in Biology
28. Navigation +Time
29 Quibble-What is Algebra
30. Logic in Maths
Odd and Ends, Essays
Constant Retirement Rate
Road Safety
3 Strikes Law in California.
Math HOW-TOs
9 Steps in Maths
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Caution: Site advice
is approximately correct, for some circumstances, not all.
Site How-TOs are
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