# Week 17 pre- calculator

this week I learned about trigonometry, it’s including the angles and the side. The reference angle for all 4 angles is the acute angle that the terminal arm makes with the x-axis.

# Week 15 pro-calculus

this week I learned about adding and subtracting rational expression with binomial and trinomial denominators,  we need to simplify the function.

# Week 14 pre-calculator

this week I learned about how to graphing reciprocals of quadratic functions.  With one vertical asymptote and with two vertical asymptotes.

# Week 13 pre-calculator

last week I learned about solving absolute value equations, we were solving by graphing. Graphically for algebraically linear and quadratic. We need make a graphing to solve the equation.

# Week 12 pre-calculator

This week I learned about how to solving systems of equations graphically. It’s mean when 2 or more equations are needed to find a solution.

# Week 11 pre-calculus

this week I learned about quadratic inequalities, this is brand new for me. It has greater- than and less-than in inequality. And how to graphing quadratic inequalities, ugly line and perfect line. And add (0,0) to find out which side is it.

# week 10 pre-calculator

I didn’t learn anything this week，but I reviewed what I learned before. Such as Sequences and series, Absolute Value and Radicals and Quadratic equations, etc.

# week 9 pre-calculator

this week I learned about how to solving problems with Quadratic functions, some problems can be solved by writing,  Then graphing a quadratic function. And determining maximum or minimum related to operations with numbers. And modeling a problem for maximizing profits.

# week 8 pre-calculator

This week I learned about how to find out vertex, and how the graph looks like.

# Week 7 pre-calculus

This week I have learned about the properties of quadratic function. And we learn it from its graph.

Vertex

x-intercept

y-intercept

domain

range

line of  symmetry