Question

similarities and differences between y=cos(2x) and y=cos(x^2)

Answer 1

Looking at a graph may help you

Answer 2

Wow, what did you graph this on? On my calc, the Cos (x)^2 only showed up as positive (which makes sense since any negative number times itself would = positive). Differences: The interval for the Cos (x)^2 graph should be between [0,1] while Cos (2x) should be [-1,1].. hope that's right lol but it sho

Answer 3

should be since cos values fall b/ween -1 and 1

Answer 4

@cococupcoffee it's cos(x^2) not (cosx)^2, which is what you graphed.

Answer 5

Ohhh, I see sorry lol. Disregard my previous answers

Answer 6

btw i used google to graph it. Just type it into google like so and press enter:
cos(2x), cos(x^2)

Answer 7

holy shizzzzzzzzzzzzzz, i didn't know that! wow... all google needs to develop now is something like wolfram alpha or w/e it's with all the steps shown and the correct answer :D

Answer 8

haha I know, I only recently discovered it could plot graphs. I often just use google instead of wolframalpha... but it works too: http://www.wolframalpha.com/input/?i=y%3Dcos%282x%29+and+y%3Dcos%28x%5E2%29+on+a+graph

Answer 9

Google makes it easier to zoom in/out. You can choose to only zoom in only horizontally or only vertically, with the little thingy at the top left.

Answer 10

Lol my discovery of wolframalpha is recent, too, since we talked about it in calc class last month and i tried using it once (on my phone) and it said something about paying (maybe i was on teh wrong site), so i never got to discover how it solves the stuff for u

Answer 11

Yeah you have to pay for full access on wolframalpha, but i think you can get 3 free step by step solutions per day.

Google can plot 3D graphs too, eg x^2+y^2

Answer 12

OMG! That looks sooo cool!!!! Haha, ama mention this next time we discuss wolfram alpha in calculus :D

Answer 13

i didn't know that either.... thanks... :)