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Hasil dari ∫ 1 − tan 2 2 x + tan 4 2 x − tan 6 2 x + … ​ d x = ....

Hasil dari ....

  1. begin mathsize 14px style negative 1 half cos invisible function application 2 x plus C end style 

  2. size 14px minus size 14px 1 over size 14px 2 size 14px cot size 14px invisible function application size 14px 2 size 14px x size 14px plus size 14px C 

  3. size 14px minus size 14px 1 over size 14px 2 size 14px csc size 14px invisible function application size 14px 2 size 14px x size 14px plus size 14px C 

  4. begin mathsize 14px style 1 half sec invisible function application 2 x plus C end style 

  5. size 14px 1 over size 14px 2 size 14px sin size 14px invisible function application size 14px 2 size 14px x size 14px plus size 14px C 

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N. Rahayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Pembahasan

Perhatikan bahwa bentuk trigonometri pada integral di atas membentuk deret geometri tak hingga dengan, Kemudian sederhanakan bentuk trigonometri tersebut menjadi, Maka,

Perhatikan bahwa bentuk trigonometri pada integral di atas membentuk deret geometri tak hingga dengan,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Suku blank awal blank open parentheses a close parentheses end cell equals 1 row cell rasio blank open parentheses r close parentheses end cell equals cell negative tan squared invisible function application 2 x end cell end table end style

Kemudian sederhanakan bentuk trigonometri tersebut menjadi,

begin mathsize 14px style S subscript infinity equals fraction numerator a over denominator 1 minus r end fraction end style

Maka,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell integral square root of 1 minus tan squared invisible function application 2 x plus tan to the power of 4 invisible function application 2 x minus tan to the power of 6 invisible function application 2 x plus horizontal ellipsis end root d x end cell equals cell integral square root of fraction numerator 1 over denominator 1 minus open parentheses negative tan squared invisible function application 2 x close parentheses end fraction end root d x end cell row blank equals cell integral square root of fraction numerator 1 over denominator 1 plus tan squared invisible function application 2 x end fraction end root d x end cell row blank equals cell integral square root of fraction numerator 1 over denominator sec squared invisible function application 2 x end fraction end root d x end cell row blank equals cell integral fraction numerator 1 over denominator sec invisible function application 2 x end fraction d x end cell row blank equals cell integral cos invisible function application 2 x d x end cell row blank equals cell 1 half sin invisible function application 2 x plus C end cell end table end style 

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