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Hasil dari x → 1 lim ​ 2 + 2 x ​ − 6 − 2 x ​ x 3 − x 2 ​ adalah ....

Hasil dari  adalah ....

  1. begin mathsize 14px style negative 2 end style

  2. begin mathsize 14px style negative 1 end style

  3. begin mathsize 14px style 0 end style

  4. begin mathsize 14px style 1 end style

  5. begin mathsize 14px style 2 end style

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Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah D.

jawaban yang tepat adalah D.

Pembahasan

Perhatikan perhitungan berikut! Dengan demikian, hasil dari adalah . Jadi, jawaban yang tepat adalah D.

Perhatikan perhitungan berikut!

begin mathsize 12px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell limit as x rightwards arrow 1 of fraction numerator x cubed minus x squared over denominator square root of 2 plus 2 x end root minus square root of 6 minus 2 x end root end fraction end cell row blank equals cell limit as x rightwards arrow 1 of fraction numerator x squared left parenthesis x minus 1 right parenthesis over denominator square root of 2 plus 2 x end root minus square root of 6 minus 2 x end root end fraction end cell row blank equals cell limit as x rightwards arrow 1 of open parentheses fraction numerator x squared open parentheses x minus 1 close parentheses over denominator square root of 2 plus 2 x end root minus square root of 6 minus 2 x end root end fraction times fraction numerator square root of 2 plus 2 x end root plus square root of 6 minus 2 x end root over denominator square root of 2 plus 2 x end root plus square root of 6 minus 2 x end root end fraction close parentheses end cell row blank equals cell limit as x rightwards arrow 1 of fraction numerator x squared left parenthesis x minus 1 right parenthesis open parentheses square root of 2 plus 2 x end root plus square root of 6 minus 2 x end root close parentheses over denominator left parenthesis 2 plus 2 x right parenthesis minus left parenthesis 6 minus 2 x right parenthesis end fraction end cell row blank equals cell limit as x rightwards arrow 1 of fraction numerator x squared left parenthesis x minus 1 right parenthesis open parentheses square root of 2 plus 2 x end root plus square root of 6 minus 2 x end root close parentheses over denominator 4 x minus 4 end fraction end cell row blank equals cell limit as x rightwards arrow 1 of fraction numerator x squared left parenthesis x minus 1 right parenthesis open parentheses square root of 2 plus 2 x end root plus square root of 6 minus 2 x end root close parentheses over denominator 4 left parenthesis x minus 1 right parenthesis end fraction end cell row blank equals cell limit as x rightwards arrow 1 of fraction numerator x squared open parentheses square root of 2 plus 2 x end root plus square root of 6 minus 2 x end root close parentheses over denominator 4 end fraction end cell row blank equals cell fraction numerator 1 squared open parentheses square root of 2 plus 2 open parentheses 1 close parentheses end root plus square root of 6 minus 2 open parentheses 1 close parentheses end root close parentheses over denominator 4 end fraction end cell row blank equals cell fraction numerator 1 open parentheses square root of 2 plus 2 end root plus square root of 6 minus 2 end root close parentheses over denominator 4 end fraction end cell row blank equals cell fraction numerator square root of 4 plus square root of 4 over denominator 4 end fraction end cell row blank equals cell fraction numerator 2 plus 2 over denominator 4 end fraction end cell row blank equals cell 4 over 4 end cell row blank equals 1 end table end style

Dengan demikian, hasil dari begin mathsize 14px style limit as x rightwards arrow 1 of fraction numerator x cubed minus x squared over denominator square root of 2 plus 2 x end root minus square root of 6 minus 2 x end root end fraction end style adalah begin mathsize 14px style 1 end style.

Jadi, jawaban yang tepat adalah D.

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