❎ EQUAÇÃO EXPONENCIAL com BASES DIFERENTES

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  • เผยแพร่เมื่อ 18 ธ.ค. 2024

ความคิดเห็น • 19

  • @marcenariafabricio4000
    @marcenariafabricio4000 10 วันที่ผ่านมา +1

    Sou prof de Mat e física,dia explicação é nota 💯

  • @dal2735
    @dal2735 11 วันที่ผ่านมา +2

    Questão bonita,conceitual valeu

  • @tiaozinho3551
    @tiaozinho3551 10 วันที่ผ่านมา +1

    Sei resolver, mas não posso de comentar que sua explicação como sempre foi sublime. Bom domingo Mestre.

  • @juliocesar-ey4er
    @juliocesar-ey4er 8 วันที่ผ่านมา

    Que Questão linda! Professor Reginaldo manda muito bem, tu é louco.

  • @pedroivorabellocabral6648
    @pedroivorabellocabral6648 11 วันที่ผ่านมา +1

    Sensacional! Like na veia!!!

  • @sergioroberto1044
    @sergioroberto1044 2 วันที่ผ่านมา

    Professor, fiz pelo método da substituição, mas esse que o senhor explicou é menos trabalhoso. Nota dez.😊

  • @joseneymarinho7477
    @joseneymarinho7477 11 วันที่ผ่านมา +1

    Gostei, mestre

  • @charlamps
    @charlamps 11 วันที่ผ่านมา +1

    Bem completinha a questão. Gostei

  • @johnnyvelasquez3799
    @johnnyvelasquez3799 11 วันที่ผ่านมา +1

    Sensacional 👏🏼👏🏼👏🏼

  • @libiaoliveira884
    @libiaoliveira884 11 วันที่ผ่านมา +1

    Bom dia 🌼 Professor Reginaldo Morais
    Muito boa a questão 🛐🙏

  • @Carlos.Chermont1963
    @Carlos.Chermont1963 11 วันที่ผ่านมา +2

    Bom dia, professor. Fiz diferente.
    9^x - 9^(x - 1) = 1944
    9^x - 9^x 9^-1 = 1944
    9^x (1 - 9^-1) = 1944
    9^x (1 - 1/9) = 1944
    9^x (8/9) = 1944
    9^x = 9 1944 / 8
    9^x = 9 243
    9^x = 9 x 9 x 9 x 3
    9^x = 3 x 3 x 3 x 3 x 3 x 3 x 3
    9^x = 3^7
    (3^2)^x = 3^7
    3^2x = 3^7
    2x = 7
    x = 7/2
    7 - 2 = 5
    Abraços, mestre. No papel fica fácil.

  • @wagnerotto3217
    @wagnerotto3217 11 วันที่ผ่านมา

    🌟🌟🌟🌟🌟

  • @romitipaolo
    @romitipaolo 11 วันที่ผ่านมา +1

    Bonita questão, mas relativamente fácil, usando-se logarítmos e suas propriedades, a solução, fica ainda mais direta.
    Enfim, apenas uma sugestão de método resolutivo.

  • @SidneiMV
    @SidneiMV 11 วันที่ผ่านมา +1

    (8/9)9ˣ = 1944 = 2³3⁵
    9ˣ = 3⁷ => x = 7/2
    *m - n = 5*

  • @imetroangola17
    @imetroangola17 11 วันที่ผ่านมา +1

    *Solução:*
    9^x [1 - 9^(-1)] = 1944
    9^x (1 - 1/9) = 1944
    9^x . 8/9 = 1944
    9^x = 1944 × 9/8
    9^x = 243 × 9 = 3⁵ × 3²
    3^(2x) = 3⁷ → 2x = 7 → x=7/2.
    Assim, m=7 e n=2. Portanto,
    *m - n = 5, a alternativa d).*

  • @umfadegodzillaqualquer
    @umfadegodzillaqualquer 11 วันที่ผ่านมา +1

    Eu fiz diferente:
    9^x - 9^(x-1) = 1944
    9^(x-1) . (9-1) = 1944
    9^(x-1) . 8 = 1944
    9^(x-1) . 2^3 = 3^5 . 2^3
    Os "2^3" se cancelam e fica:
    9^(x-1) = 3^5
    (3^3)^(x-1) =3^5
    3^(3x-3) = 3^5
    3x-3 = 5
    3x = 8
    X= 8/3
    X= m/n
    m - n = 8 - 3
    m - n = 5

  • @billykong550
    @billykong550 11 วันที่ผ่านมา +1

    X should be equaled to 3.5.

  • @ConradoPeter-hl5ij
    @ConradoPeter-hl5ij 7 วันที่ผ่านมา

    => 9ª-9ª-¹=1944
    => 9ª[1-(1/9)]=2³3⁵
    => (3²)ª(8/9)=2³3⁵
    => 3²ª[(2³)/(3²)]=2³3⁵
    => 2³3²ª-²=2³3⁵
    => 2(a-1)=5
    => a=7/2
    => m/n=a=7/2
    => m/n=7/2
    => se m€Z, n€Z e m/n=7/2, então m=7 e n=2
    m-n=7-2=5 => m-n=5 (resposta)
    => v=m-n=n[(m/n)-1] =n[(7/2)-1]=5n/2
    => m-n=5n/2
    => m-n=(5×2)/2
    => m-n=5 (resposta)
    => 7-2=5 (verdadeiro)
    resposta: letra d