Question

Need help with precalculus!

Answer 1

Hi! What is your question? :)

Answer 2

Hllo , i dont know anything

Answer 3

You must know something. :)

Answer 4

which one? amplitude?

Answer 5

Ok, so normally, what is the period of the trig function tan

Answer 6

Nothing :(

Answer 7

I need help wit all of them

Answer 8

Ok, we'll do them all :)

Answer 9

Thank you!

Answer 10

Will you be abe to receive my owl bucks?

Answer 11

Depends, I'm not a QH, but you could send it from the profile :P

Answer 12

But, back to the worksheet. :)

Answer 13

y = A sin(Bx + C) + D

amplitude is A
period is 2π/B
phase shift is −C/B
vertical shift is D

Answer 14

Tis is for number 1?

Answer 15

Yes :)

Answer 16

Ok,

Answer 17

We are given:

\(\sf\Large y = -4tan(\frac{1}{2}x)\)

The amplitude is |-4| = ?

Answer 18

4

Answer 19

correct

Answer 20

correct :)

Answer 21

So amps will ablways be absolute value? also my thing keeps glitcching have to refresh to type again sorry

Answer 22

yes

Answer 23

Ok thank you

Answer 24

ok, now normally the period for tan is pi

Answer 25

got to refresh too >.<

Answer 26

Lol

Answer 27

Thats fine

Answer 28

\(\sf\Large y = -4tan(\frac{1}{2}x)\)

So period will be \(\sf\Large \frac{\pi}{\frac{1}{2}} = ?\)

Answer 29

@pooja195 thats k ppooja it was my faut i just noticed i int press ask a qualified helper lol

Answer 30

it's ok, pooja is offline :)

Answer 31

and I'm better at trig :P

Answer 32

O lol, Period will always be 2pi/b? I have t mae sure cus i have a test tommorow

Answer 33

haha

Answer 34

2pi/b is only for cos and sin

Answer 35

pi/b is for tan

Answer 36

o ok

Answer 37

so pi/1/2 = uhm

Answer 38

1.57

Answer 39

pi / 1/2 = pi * 2/1 = ?

Answer 40

Oh is that how you do it! I got 6.3 or 6.28

Answer 41

just leave it as 2pi :)

Answer 42

Ok lol thats much better

Answer 43

ok, now we need to graph it

Answer 44

we need to graph another equation actually :P

Answer 45

Wow theres alot of people looking in here

Answer 46

Ok

Answer 47

Do you still have to refresh?

Answer 48

lots of people because this is a qh question

Answer 49

yea, going to refresh again >.<

Answer 50

Oo, i think its lagging lol i see 5 pople on the top and 7 people on the bottom

Answer 51

now it's finally fixed! ;)

Answer 52

Ok great its working for mine too

Answer 53

it keeps bringing @spraguer to view this post and that's causing the lag

Answer 54

Hhaah, really?

Answer 55

yea, ok lets graph it

Answer 56

https://www.desmos.com/calculator/v1ttwtxx3j

Answer 57

you just need to graph this much http://prntscr.com/938xhg

Answer 58

Wait how would i know to graph that?

Answer 59

LOl im so sorry i didnt see that part.

Answer 60

because you should know how to graph y = sin(x)

and for each point in sin(x), you just miltiply the y value by -3

Answer 61

added y = sin(x) so you can see the difference :)
https://www.desmos.com/calculator/qyjpaojno8

Answer 62

see http://prntscr.com/938yl0

Answer 63

So i would draw whats on the print screen into the graph?

Answer 64

yes, from this one http://prntscr.com/938xhg

for question #2 :)

Answer 65

also, remember to write those points on it :P

Answer 66

Im sorry for not bieng so knowledagle in those things. But how did u get that

Answer 67

Are those formula based like they are always there for this type of equation or o i nee to input something int othe calculator?

Answer 68

Also, the graphs of y = sin(x) should be memorized :)

Answer 69

Ok thank you, are there ones for cos and tan?

Answer 70

anyways, you need to memorize a few points of the graph of y = sin(x) so that way you can connect the points to make the graph

and the graph is never ending so you will only have to do it for 1 period :)

Answer 71

lol

Answer 72

the graphs for cos(x) and tan(x) are different

cos(x) is kind of similar, but tan(x) is way different :P

Answer 73

Ok i will check them later thanks

Answer 74

Cough Cough Mathlete xD

Answer 75

So on number 2 i would graph the first period?

Answer 76

yes, you graph this:
http://prntscr.com/938xhg

Answer 77

Ok thank you

Answer 78

Does number 1 have to do with number 2?

Answer 79

wow

Answer 80

nope

Answer 81

lol can't stop laughing

Answer 82

#1 and #2 are seperate :)

Answer 83

ok, so now #3, right? :)

Answer 84

=-3sinx is nothing i just write y=sin(x)?

Answer 85

Lol how od i give u owl bucks dii give them alredy?

Answer 86

You can't rate me since I'm not a QH :P

Answer 87

o :(

Answer 88

so since you can't rate me, I can't give owlbucks :P

Answer 89

get*

Answer 90

now for #3

ok for #3

sec(x) = 1/cos(x)

cos(x) has a period of 2pi, so sec(x) has a period of

Answer 91

Ok well so far i apprciate your help

Answer 92

sec(x) also will have a period of 2pi :)

Answer 93

and since 1/2 sec (x) has no 'b'

the period is just still 2pi :)

Answer 94

Ok thank you so the answer would be 2pi?

Answer 95

yup :)

Answer 96

graph for it https://www.desmos.com/calculator/hbrofsnou8