## csmith0355 Find the amplitude feature for the sin graph of y=f(x) 1)amplitude 2)period 3)phase shift 4.)the domain/the range 5.)x/y intercept 6.)the equation of the graph 9 months ago 9 months ago

1. csmith0355

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2. csmith0355

i know the amplitude is 3 but how do i find the others by looking on te graph

3. dan815

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4. dan815

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5. vinnv226

The amplitude is half the difference between the max value and min value. The max value here is 3 and the min value is -3. So A=(3--3)/2=3. The period is the time it takes for the graph to complete one cycle. Here, it completes one cycle between negative pi and pi, so the period is 2pi.

6. dan815

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7. dan815

not sure if they count shift in up and down as phase shift too.. but theres no phase shift in your problem anyway, as it hasnt moved up or down or left or right

8. csmith0355

so the period would be -pi minus pi?

9. dan815

period is the length between these 2 points

10. dan815

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11. dan815

what is that length?

12. csmith0355

-pi/2 to pi/2?

13. dan815

that is the start and end points u are giving me for 1 oscillation what is the length?

14. dan815

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15. csmith0355

6?

16. dan815

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17. dan815

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18. dan815

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19. csmith0355

oh 5 so i exclude my starting and ending point?

20. dan815

lemme ask you simpler question... what is this length|dw:1372973193523:dw|

21. dan815

you know pi is just a number right is that what is confusing you pi = 3.14159263.....

22. dan815

3.14159265*3

23. csmith0355

i dnt know why im not undertanding would it be -2? i did -pi/2-pie/2

24. dan815

okay can i ask you 1 thing

25. csmith0355

yea

26. dan815

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27. dan815

ruler is 20 cm

28. csmith0355

yeah

29. dan815

whats the distance from the middle

30. dan815

to 20 cm

31. dan815

these are not trick questions lol

32. dan815

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33. csmith0355

i would say 15 is b/w it ...

34. dan815

wut the...

35. dan815

okay a rule is 20 CM...

36. csmith0355

lol i dnt know

37. dan815

what is half of the rule distance?

38. dan815

okay maybe we need to work with smaller numbers...

39. dan815

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40. csmith0355

do u know a site that has similar examples ?

41. dan815

what is the distance between point 1 and 2?

42. dan815

what is 1+1?

43. csmith0355

2

44. csmith0355

lol

45. dan815

okay so that means there was 1 added to 1

46. dan815

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47. dan815

so that distance there is 1... DO YOU GET IT??

48. csmith0355

i think so

49. dan815

wait can you see my drawing?

50. csmith0355

yes

51. dan815

umm okay.. now what is this distance ur gonna have to start answering faster or this will take forever

52. dan815

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53. csmith0355

1

54. dan815

yay

55. dan815

so how long is this whole line?|dw:1372973851072:dw|

56. csmith0355

2 i think

57. dan815

amazing u are like a genius

58. dan815

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59. dan815

lengths in between there?

60. csmith0355

lol um

61. csmith0355

im not sure i dnt wanna write the wrong thing

62. dan815

theres ur problem.. ur too afraid to do math

63. dan815

you cant learn like that... everyone will make mistakes, but they have to learn from it

64. csmith0355

yeah i know

65. dan815

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66. dan815

67. dan815

lemme show it to you another way

68. dan815

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69. csmith0355

1

70. dan815

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71. dan815

do you agree is right?

72. csmith0355

yes

73. dan815

what is the total length of this line?

74. csmith0355

2

75. dan815

okay, so u see me writing from 0 to 2 or -1 to 1 they were both length 2

76. csmith0355

yeah

77. dan815

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78. dan815

okay now

79. dan815

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80. csmith0355

2

81. dan815

2?

82. dan815

okay let me rephrase question

83. dan815

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84. csmith0355

there is 1 for each side

85. dan815

....

86. dan815

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87. dan815

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88. csmith0355

3

89. dan815

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90. csmith0355

3.14

91. dan815

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92. csmith0355

0

93. dan815

...

94. dan815

what is the length of the left side

95. csmith0355

-3.14

96. dan815

length

97. dan815

can something be negative units long?

98. dan815

what is the size ? of that line

99. csmith0355

3.14

100. dan815

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