Homework QuestionsHomework Questions

Section 4.4Section 4.4(again)(again)

More TranslationsMore Translations

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

bc

State the phase shift and State the phase shift and graphgraph

)sin( y

State the phase shift and State the phase shift and graphgraph

)2

2cos( y

State all translations and State all translations and graphgraph

6)2

cos(4 xy

State all translations and State all translations and graphgraph

2)2

3sin(2 y

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