Day 2

1. Homework QuestionsHomework Questions

2. Section 4.4Section 4.4
(again)(again)
More TranslationsMore Translations

3. TranslationsTranslations
 Horizontal shift = phase shiftHorizontal shift = phase shift
 y = a sin (bx +c) + dy = a sin (bx +c) + d
 y = a cos (bx +c) + dy = a cos (bx +c) + d
– If c>0 shift LeftIf c>0 shift Left
– If c<0 shift RightIf c<0 shift Right
b
c−

4. State the phase shift and graphState the phase shift and graph

)sin( π+Θ=y

5. State the phase shift and graphState the phase shift and graph
 )
2
2cos(
π
−Θ=y

6. State all translations and graphState all translations and graph

6)
2
cos(4 −+= π
x
y

7. State all translations and graphState all translations and graph
 2)
2
3sin(2 +−Θ=
π
y

8. HomeworkHomework
 P. 395 (61-68)P. 395 (61-68)