son asked in 科學及數學數學 · 5 years ago

伐數分式及公式6(請盡快回答)

把下列的公式的主項變換為x的題目要步驟+答案,其他題目只須答案

https://docs.google.com/document/d/1uQ7Q8slakXiPwM...

https://docs.google.com/document/d/1RxMIfb2GRb0weL...

1 Answer

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  • 5 years ago
    Favorite Answer

    2(i)

    z=y(x+3)

    x+3=z/y

    x=z/y -3

    2(ii)

    m=(n/2)(2-x)

    2-x=2m/n

    x=2-2m/n

    3(i)

    y=(5-x)/(x+2)

    xy+2y=5-x

    x(y+1)=5-2y

    x=(5-2y)/(y+1)

    3(ii)

    y-2=(x-1)/2x

    2xy-2x=x-1

    2xy-x=-1

    x(2y-1)=-1

    x=1/(1-2y)

    (ii)

    C=-5 C=0 C=20 C=100

    F=23 F=32 F=68 F=212

    (iv)

    F=23 F=32 F=68 F=212

    C=-5 C=0 C=20 C=100

    (v)

    F,C

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