Respuesta :

andytran027

Answer:

f ' (x) = 4x - 40

Step-by-step explanation:

[tex]f(x)=\frac{1}{4} x+10\\y=\frac{1}{4} x+10\\[/tex]

Switch y and x for inverse

[tex]x=\frac{1}{4} y+10\\x-10=\frac{1}{4} y\\y=4*(x-10)\\f'(x)=4x-40[/tex]

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