Question

NEED HELP with question #8

Answer 1

whats question 8?

Answer 2

You do realize that the t^3 - t = theta, right?

Answer 3

ya

Answer 4

So you can actually set t^3 - t = 90 and solve for t.

you already know that sin(90) = 1, so that means that if you find t, you'll find the t where x = 1

Answer 5

This is a little tricky though. Solving for t won't be as simple as that

Answer 6

no they plugged in values to one that was similar to this

Answer 7

like 1,0 and 100 but that was when t was an exponent

Answer 8

shld I skip this one

Answer 9

For instance, when t is approximately 4.5, x = 1, theta = 90

Answer 10

No, you shouldn't.

Answer 11

well i want to

Answer 12

I solved that one using a calculator because that's the only way I would know how to solve these

Answer 13

but, lets do one that you would know how to do

Answer 14

t^3 - t = theta

when theta = 0

Answer 15

Do that one

Answer 16

I have to hand in this question it is evn

Answer 17

rld, why are you doing even numbered questions. You're wasting both our time

Answer 18

no that is what i need to hand in

Answer 19

t=1

Answer 20

or 0

Answer 21

it's corresponding to angles instead of time. I know it's a natural progression to think that t always responds to time, but it doesn't

Answer 22

oh right

Answer 23

You have to finish it though

t can equal 1 or zero

either way theta = 0

so sin(0) = 0
cos(0) = 1

so x = 0, y = 1

Answer 24

ya but what does t=

Answer 25

t = -1, 0, or 1, remember? You calculated it

Answer 26

i went on to the next one already

Answer 27

You have to find t, x, and y

Answer 28

not just t

Answer 29

I wanna go to bed already

Answer 30

lol

Answer 31

lol

Answer 32

Nobody is stopping you from going to bed

Answer 33

idk

Answer 34

idk

Answer 35

for these i just plug in t=0 and it gives me an x and it gives me a y
then i do
t=1
t=2
t=3...

Answer 36

oh ok

Answer 37

Yeah, I kind of went backwards with it

Answer 38

culate it in degrees or radians?

Answer 39

culate it in degrees or radians?

Answer 40

well actually for these we can pick any t we want

Answer 41

degrees

Answer 42

so its easier to pick t's that are easy to solve

Answer 43

oh man that is where i was going wrong

Answer 44

I hate radians

Answer 45

u hate e/t

Answer 46

i would use t=-1 t=0 and t=1 as a start

Answer 47

ok

Answer 48

it doesn't say whether to use radians or degrees

Answer 49

any input on that eyust

Answer 50

well it doesnt really matter.

Answer 51

so it wants a parameterization

Answer 52

my book likes to use radians but i dont care i will use what i want to

Answer 53

yeah, I don't think it matters

Answer 54

and it tell you its a circle

Answer 55

yaa

Answer 56

so a circle is x^2 + y^2 = r^2

Answer 57

we know x and we know y

Answer 58

find r by pulgging in your t values

Answer 59

actually, we still have to figure out x and y. We're inputting t

Answer 60

huh we didn't do it like that

Answer 61

(cost^3-t)^2 + (sint^3-t) ^2 = r^2

Answer 62

Oh, lookie there

Answer 63

You still have to find x and y

Answer 64

r = 1

Answer 65

making it look pretty doesn't change the fact that you still have to calculate the cosine and sine based on t that gives you x and y that you need to solve it

Answer 66

a parameterization just says change the function of x and y to just t's

Answer 67

Okay, that's good. My way is just the long way to the same goal. Your approach is superior, no doubt.

Answer 68

and also tell us when t starts and stops

Answer 69

ya be nice to eyust

Answer 70

You assume that I was being mean to him. rld, you don't need to tell me what to do. I can handle myself

Answer 71

I have a feeling I will get to bed before rld does

Answer 72

R u ready to kill me @hero

Answer 73

Now why would I want to do that?

Answer 74

cuz i am annoying

Answer 75

ok so @ t= 0
we get (1,0)

but the graph for this is nuts!

Answer 76

it ends up being a solid circle with radius 1 but here let me see if w.a will graph it

Answer 77

I also got a crazy graph

Answer 78

ask you professor/teacher about number 8 i honestly am not sure what they want there

Answer 79

get some rest imma do the same =P

Answer 80

later man

Answer 81

what time is it by u

Answer 82

thanks for ur help

Answer 83

12 44 got class at 8