Precalc 11 – Week 3

This week in Precalc we started unit 2.  We learned about an absolute value of a real number which is how far a number is from 0 and positive numbers always equal a positive number.

Ex :

|2| = 2

|-4|= 4

We also learned how to simplify radical expressions which was a good reminder on knowing how to simplify entire and mixed radicals.

Ex :



2xy \sqrt[3]{3y}

x and y are real numbers

precalc 11 Week 2

This week in Precalc 11 we extended our unit to geometric sequences and series.  I learned more formulas and how to find the sum of a term.  we also learned infinite and finite geometric series which introduced the common ratio.

I discovered how to use the infinite geometric series formula to isolate the common ratio.  Multiplying each side by 1-r was not something I thought of.