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.
|2| = 2
We also learned how to simplify radical expressions which was a good reminder on knowing how to simplify entire and mixed radicals.
x and y are real numbers
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 was not something I thought of.
arithmetic sequeunce : 6, 12, 18, 24, 30
FInd Tn :