Math 9, Lesson 4, Fall 2017, 10/1/2017

Weidong Posted in Fall 2017, Homework, Math 9, Teaching info，
01 October 2017
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We continue our study of complex number. Today we talk about representaing complex numbers in Complex Plane and how to calculate the magnitude of a complex number. We also look at various properties of a complex number with its conjugate.

Homework: Page 1, Page 2, Page 3,

3.2.1 – 3.2.7, 3,3.1 – 3.3.1 – 3.3.7

 

Algebra 2, Lesson 4, Fall 2017, 10/1/2017

Weidong Posted in Algebra 2, Fall 2017, Teaching info，
01 October 2017
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We study Arithmetic Mean and Geometric Mean with 2 variables and more variables.

For any n nonnegative real numbers a1, a2, …, an,

(a1 + a2 + … + an) / n >= n-th root of (a1a2…an)