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Hasil dari ∫ sec 4 2 x tan 3 2 x d x = ....

Hasil dari ....

  1. begin mathsize 14px style 1 fourth tan to the power of 4 invisible function application 2 x plus 1 over 6 tan to the power of 6 invisible function application 2 x plus C end style 

  2. begin mathsize 14px style 1 half tan to the power of 4 invisible function application 2 x plus 1 third tan to the power of 6 invisible function application 2 x plus C end style 

  3. begin mathsize 14px style 2 tan to the power of 4 invisible function application 2 x minus 4 tan to the power of 6 invisible function application 2 x plus C end style 

  4. begin mathsize 14px style 1 over 8 tan to the power of 4 invisible function application 2 x plus 1 over 12 tan to the power of 6 invisible function application 2 x plus C end style 

  5. begin mathsize 14px style 1 over 8 tan to the power of 4 invisible function application 2 x minus 1 over 12 tan to the power of 6 invisible function application 2 x plus C end style 

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N. Rahayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

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Pembahasan

Misalkan: u = tan ⁡2x Maka, Sehingga, integral di atas menjadi,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell integral sec to the power of 4 invisible function application 2 x tan cubed invisible function application 2 x d x end cell equals cell integral sec squared invisible function application 2 x sec squared invisible function application 2 x tan cubed invisible function application 2 x d x end cell row blank equals cell integral sec squared invisible function application 2 x open parentheses 1 plus tan squared invisible function application 2 x close parentheses tan cubed invisible function application 2 x d x end cell end table end style

Misalkan:
u = tan ⁡2x

Maka,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator d u over denominator d x end fraction end cell equals cell 2 sec squared invisible function application 2 x end cell row cell integral fraction numerator d u over denominator d x end fraction d x end cell equals cell 2 integral sec squared invisible function application 2 x d x end cell row cell 1 half integral d u end cell equals cell integral sec squared invisible function application 2 x d x end cell end table end style

Sehingga, integral di atas menjadi,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell integral sec to the power of 4 invisible function application 2 x tan cubed invisible function application 2 x d x end cell equals cell integral sec squared invisible function application 2 x open parentheses 1 plus tan squared invisible function application 2 x close parentheses tan cubed invisible function application 2 x d x end cell row blank equals cell 1 half integral open parentheses 1 plus u squared close parentheses u cubed blank d u end cell row blank equals cell 1 half integral u cubed plus u to the power of 5 d u end cell row blank equals cell 1 half open parentheses 1 fourth u to the power of 4 plus 1 over 6 u to the power of 6 close parentheses plus C end cell row blank equals cell 1 over 8 u to the power of 4 plus 1 over 12 u to the power of 6 plus C end cell row blank equals cell 1 over 8 tan to the power of 4 invisible function application 2 x plus 1 over 12 tan to the power of 6 invisible function application 2 x plus C end cell end table end style 

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