Please, explain?

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4 Answers

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  • 6 months ago

    (df(y))/(dx) = d/(dy)(f(y)×(df(y))/(dx))

  • ?
    Lv 7
    6 months ago

    d...............d.............dy

    --- (f(y)) = --- (f(y)) • ---............ANS (Option D)

    dx.............dx...........dx

  • ted s
    Lv 7
    6 months ago

    Yes D) is correct ; .....df / dx ≡ ( df / dw ) ( dw / dt ) (dt/dx) by the theorem on derivatives of Composite Functions...in algebra you remember that [ A B C } / [ B C H ] ≡ A / H...same holds for derivatives using ' symbols '

  • ?
    Lv 7
    6 months ago

    The Chain Rule: dz/dx = (dz/dy)•(dy/dx)

    So, where f = f(y), df/dx = (df/dy)•(dy/dx)

    d(f(y))/dx = (d(f(y))/dy)•(dy/dx)

    Answer D

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