# Top 5 Memories of PreCalc 11 – Week 18/19

Math had not been my strongsuit over the past couple years, I just couldn’t understand some of it for some reason, even though other classes came easy for me. Precalc 11 changed this. I was able to not only understand how the math works and why it is the way it is. I could think […]

# Week 17 – precalculus 11

The Sine Law For the longest time in math we were told we had to do multiple steps to find the side length or angle of a point of a triangle. If it was not a right angle we would have to cut it in half and find the values and sometimes double them to […]

# Week 16 – precalculus 11

Solving Rational Equations To solve a rational equation we must cancel out the denominators. To do this we must multiply by each denominator, this will cancel them out but because we have to do the same for everything in the equation, we will have then multiply the numerators by the values that were not canceled […]

# Week 15 – precalculus 11

Multiplying and Dividing Rational Expressions: Multiplying rational expressions is just like multiplying any other fraction, just multiply the top and bottom. Although if we are part of the expression is in a different form, we will need to factor it before multiplying. When it comes to division we just recipricate the fraction or “flip” it […]

# Wave Interference Blogpost

Constructive interference: Above is an example of Constructive interference of a wave, it is tough to see but right at the beginning the wave is much larger and this is where the two waves came together to make a big one, they combined. You can see it goes back down and seems to “split” into […]

# Week 14 – precalculus 11

Equivalent Rational Expressions: To simplify a Rational Expression, we must factor the numerator and denominator, cancel out any common factors and find the Non-permissible values. We can better understand this by showing it. If we are given the expression We will then simplify or factor the top and bottom Now in a fraction, the denominator […]

# Videos of 4 Types of Waves

Pulse: Above is a demonstration of a pulse wave on a slinky, it is not a repeating wave and is mechanical. Transverse Waves: Above is a demonstration of  a transverse wave, the spring is moved to the side and let go and the wave goes across to the opposite side. Periodic Waves: Above is an […]

# Week 13 – precalculus 11

Graphing Ablsolute Value Functions and Piecewise Notation The way absolute value functions work is that the points can never be negative, so the line never goes into the negative zone on the graph. It will reflect back up instead. The point where it reflects on the x axis is called the critical point or x-intercept. […]

# Thermos Challenge Blogpost

Planning, Process, Analysis: Prototype Testing Procedure:   Goal: The goal for our procedure is to determine how effective each of our thermos. prototypes are at conserving heat of 150ml of boiling water over time. We also needed to stay within a budget and make it aesthetic pleasing.   Materials:   -Beaker (250 ml)  -Hot Plate  -Thermometer (Celsius)  -Funnel  -Tongs  -150ml of boiling water  […]

# Week 12 – precalculus 11

Solving Systems of Equations Algebraically In this case, we will be using liner-quadratic systems. A system is a series of two equations in which you can substitute one equation and put it in the other and use this to find the values for x, usually by factoring at one point. You can also find Y […]