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Tentukan nilai limit fungsi berikut ini: c) x → 3 lim ​ x 2 − x − 6 x 2 − 9 ​

Tentukan nilai limit fungsi berikut ini:

c)     

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F. Nur

Master Teacher

Mahasiswa/Alumni Universitas Muhammadiyah Malang

Jawaban terverifikasi

Jawaban

 begin mathsize 14px style limit as x rightwards arrow 3 of fraction numerator x squared minus 9 over denominator x squared minus x minus 6 end fraction equals 6 over 5 end style 

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Pembahasan

Dengan menggunakan metode pemfaktoran. Jadi,

Dengan menggunakan metode pemfaktoran.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell limit as x rightwards arrow 3 of fraction numerator x squared minus 9 over denominator x squared minus x minus 6 end fraction end cell equals cell limit as x rightwards arrow 3 of fraction numerator open parentheses x plus 3 close parentheses up diagonal strike open parentheses x minus 3 close parentheses end strike over denominator open parentheses x plus 2 close parentheses up diagonal strike open parentheses x minus 3 close parentheses end strike end fraction end cell row blank equals cell limit as x rightwards arrow 3 of fraction numerator x plus 3 over denominator x plus 2 end fraction end cell row blank equals cell fraction numerator 3 plus 3 over denominator 3 plus 2 end fraction end cell row blank equals cell 6 over 5 end cell end table end style 

Jadi, begin mathsize 14px style limit as x rightwards arrow 3 of fraction numerator x squared minus 9 over denominator x squared minus x minus 6 end fraction equals 6 over 5 end style 

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