Transformations
With transformations i first look at what is inside the parenthesis. Whatever is inside the parenthesis will determine what whether you graph shifts to the left or to the right. If there is a negative/subtraction sign it will move to the right and if it is a positive/addition sign then it moves to the left. Then I look at what is outside the parenthesis. If there is a negative/subtraction sign it shifts down. If there is a positive/addition sign then you shift the graph up. It also depends on how many units come after the sign. One thing i try to remember is that for transformations , that Ms. Hwang commonly uses is that they are counter intuitive.
Trigonometry
I think trigonometry is basically centered around the unit circle. If you know all you radians, coordinates, and fractions then you are good. i try to remember that the sections go by 6, 4, 3, 2, then you flip them over on each side of the circle and for Quadrant II is one less than the denominator, Q.III is one more, and Q.IV is multiply by 2 subtract one. And i just remembered, for graphing, that cos(x) that it has a point at (0,1) and sin(x) is at the origin, and they look like speed bumps. For all the other ones i just remember that they have asymptotes .
What Confuses Me
Finding the periods and the domain and range for tan(x), csc(x), sec(x), cot(x), cos(x),and sin(x).
Subscribe to:
Post Comments (Atom)
To find the Period of a function all you need is the "formula" 2pi/B.
ReplyDeleteLets say you were given the function y=3cos(2x)+1.
The number next to x is B. In this case, B is 2.
so plug 2 into the "formula".. 2pi/2
next, cancel out the 2 from the top and bottom.
All you're left with is pi, the period.
Well yeah thats a formula but she has enough to remember lol
ReplyDeleteThe period i where the graph repeats. It goes like a rollercoaster until it starts going down the same hill again. Or, when you get the same output. Look at a Sin(x) graph. See how it starts at zero? Ok now see the next point that starts at zero?(pi) Since its starting at zero AGAIN, that means the graph is repeating, therefore your period is Pi.
Ya homie i dont understand most of the things you listed
ReplyDelete