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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: cho hàm số y= f (x) = 4x-1/ 3 .TÍNH f (0) , f( _3 ) ,f ( 1/2 )

Toán Lớp 7: cho hàm số y= f (x) = 4x-1/ 3 .TÍNH f (0) , f( _3 ) ,f ( 1/2 )

Comments ( 2 )

  1. y= f(x)= 4x-1/3
    f(0)= 4.0-1/3
         = 0-1/3
         = -1/3
    f(-3)= 4.(-3)1/3
         = -12-1/3
         = -36/3-1/3
         = -37/3
    f(1/2)= 4.1/2-1/3
             = 2-1/3
             = 6/3-1/3
              = 5/3
    @namOvO

  2. Answer
    $\text{Ta có:}$ y = f(x) = {4x – 1}/3
    $\text{Với}$ f(0)
    -> {4 . 0 – 1}/3
    = {0 – 1}/3
    = {-1}/3
    $\text{Với}$ f(-3)
    -> {4 . (-3) – 1}/3
    = {-12 – 1}/3
    = {-13}/3
    $\text{Với}$ f(1/2)
    -> {4 . 1/2 – 1}/3
    = {2 – 1}/3
    = 1/3

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222-9+11+12:2*14+14 = ? ( )

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