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Sketsalah grafik fungsi trigonometri berikut. b. y=2 cos (x−2π​) dengan −π≤x≤π.

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Sketsalah grafik fungsi trigonometri berikut.

b. begin mathsize 14px style y equals 2 space cos space left parenthesis x minus straight pi over 2 right parenthesis end style dengan begin mathsize 14px style negative straight pi less or equal than x less or equal than straight pi end style

R. Novianto

Master Teacher

Mahasiswa/Alumni Universitas Tanjungpura Pontianak

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Pembahasan

sketsa grafik fungsi trigonometri begin mathsize 14px style y equals 2 space cos space left parenthesis x minus straight pi over 2 right parenthesis end style dengan begin mathsize 14px style negative straight pi less or equal than x less or equal than straight pi end style.

begin mathsize 14px style table attributes columnalign right center left columnspacing 2px end attributes row y equals cell 2 space cos space left parenthesis x minus straight pi over 2 right parenthesis end cell row blank equals cell 2 space cos space fraction numerator 2 straight x minus straight pi over denominator 2 end fraction end cell row blank blank blank row cell y subscript m a k s end subscript end cell equals 2 row cell y subscript m i n end subscript end cell equals 2 row periode equals 1 end table end style 

  • untuk begin mathsize 14px style x equals straight pi end style , 

begin mathsize 14px style table attributes columnalign right center left columnspacing 2px end attributes row y equals cell 2 space cos space open parentheses straight pi minus straight pi over 2 close parentheses end cell row blank equals cell 2 space cos space open parentheses fraction numerator 2 straight pi minus straight pi over denominator 2 end fraction close parentheses end cell row blank equals cell 2 space cos space open parentheses straight pi over 2 close parentheses end cell row blank equals cell 2 space cos space 90 degree end cell row y equals 0 end table end style

 

  •  untuk begin mathsize 14px style x equals straight pi over 2 end style   
  • begin mathsize 14px style table attributes columnalign right center left columnspacing 2px end attributes row y equals cell 2 space cos space open parentheses straight pi over 2 minus straight pi over 2 close parentheses end cell row blank equals cell 2 space cos space open parentheses 0 close parentheses end cell row blank equals cell 2 space cross times 1 end cell row y equals cell 2 space end cell end table end style 

Grafik fungsi trigonometri :

 

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Sketsalah grafik fungsi trigonometri y=cos(x−30)∘ dengan bantuan tabel pada daerah asal {x ∣ 0∘≤x≤360∘}.

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