This week we reviewed Functions and relations from grade 9. Functions are types of relation with only 1 connection with another number or variable or basically a special relation ship that you only have 1 of, like your spouse. We also learned about function notation. Function notation is a way a function is written and it is a different way then using the both X and Y in an equation. It is meant to be a way of giving information about the function without being a very long equation or explanation. The functions are usually a single letter like F or G or basically any letter.
So this week in math we had our math mid term and since we just did review, we where asked to make an informative video from our previous units. So I did trigonometry because I found that to be an easy unit.
This week in Math 10 we finished off the polynomials and factoring unit. During this week we learned how to factor factor perfect trinomials in preparation for the unit test.
Here are some helpful hints on factoring perfect square trinomials: don’t for get to use CDPEU (Common factors, difference in squares, pattern, easy and ugly), The first and last terms are always perfect squares and the middle term is the root of the first and last term x 2.
I believe that racism although being still around today, it is not as bad as it used to be. Today there is still an abundance of racism in all countries and it will always be like that because of the past with the slavery and what happened in the mid 1900s. The past is the past but people will never forget what happened. Many people today not only in America are very racist and the things they believe are there own opinion but saying that is still not an acceptable reason for being racist. In this day and age if people would just keep their words to their selves there would be less racism in the world. We now realize racism is a terrible thing and will always be hated and to be recognized as wrong, however of course many people still don’t agree as it being wrong. Today the KKK is still around in many American states and there are many KKK rallies and riots going on but you never see any change. There is still discrimination towards each and every single race and the violence from police and government positions in America are unacceptable and occur way to often. Racism is very alive to this day, it just is more recognized and educated, yet there is little to no movement to stopping this crisis in the world.
This week in math 10 I learned how to factor polynomials (which is doing the reverse of foil). Doing foil is much like doing distributive property although it is divided into two brackets. Factoring polynomials is like breaking the equation down and finding its original numbers that made up the equation. Sometimes the equation can have a pattern, they can all divide by the same number. We also learned out a phase of CDPUE which is can divers pee easy underwater, The C in the stands for common which means you need to figure out if the numbers have anything of common. The D stands for difference of squares, The P is pattern. The E is easy so just look to see if it is an easy question. Then lastly U which stands for ugly this is when there is a non square number in front of the polynomial if it is this one you can’t use the rest of the rules. And lastly we learned how to use the “claw” and for the claw its to multiply 2 polynomials, you take the first number or X and multiply it to the next number or X in the other polynomial and then to the second number, then you move to the second number in the first polynomial and take that and multiply it the same way you did with the first number or X. Then you collect the like terms and you have your expanded term.
This week in math 10 we reviewed on what we did in math 9 on adding and subtracting polynomials. We also learned how to multiply binomials, and we also learned foil and distributive property. Foil stands for finding the product of the first, outside, inside then last terms. We also learned about the different types of binomials, trinomials, monomials, etc. There are so many ways to multiply binomials, but one way I found the easiest to multiply them is by using the area models. An area model is a simple to find the product of polynomials. You won’t likely miss one of the terms and you can use it with any type of polynomial. But you can only multiply 2 polynomials together.
The first example is how the area model relates to multiplication and how you can use it for big multiplication questions. And the second example is how to easily multiply the 2 polynomials together.
This week in math 10 I learned how to find a missing angle in a right triangle. To find the angle the first thing you do is determine whether you use sine, cosine or tangent you do this using the abbreviations SOH CAH TOA the first letter in the abbreviation is which main function you will use (sine, cosine, tangent). The second and last letters are for the numbers that go on the bottom and the top of the fraction, for example you have an opposite of 48 and a hypotenuse of 73, you would use sine because you only have the opposite(O) and the hypotenuse(H) and 48 would go over 73. after that you move the sin to the other side of the equation but you use inverse sin (sin-1) so its x=sin-1 (48/73) then you use your calculator to determine the answer which is the degree of 41. and then you need to do that for the other side for angle Y (it says x in the picture on the right but it is supposed to be Y) which would be Y = sin-1 (55/73) and that would = the degree of 49.