nani7050 nani7050

19-06-2019
Mathematics

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If f(x) = 1/2x – 10, then f^-1(x) =

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wegnerkolmp2741o wegnerkolmp2741o

19-06-2019

Answer:

f^-1 (x) = 2x+20

Step-by-step explanation:

f(x) = 1/2x – 10

To find the inverse, replace f(x) with y

y = 1/2 x -10

Exchange x and y

x = 1/2 y- 10

Solve for y

Add 10 to each side

x+10 = 1/2 y-10+10

x+10 = 1/2 y

Multiply by 2

2(x+10) = 1/2y *2

2x+20 = y

The inverse is

f^-1 (x) = 2x+20

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