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DIA [1.3K]
2 years ago
15

What is the inverse of the function f(x) = x + 3​

Mathematics
2 answers:
xenn [34]2 years ago
8 0

Answer:

the answer would be f(x)=x-3

Step-by-step explanation:

JulijaS [17]2 years ago
3 0

Answer:

f inverse of x =x-3

Step-by-step explanation:

f(x)=x +3

let f(x) be y

y=x+3

make x the subject of the formula

x=y-3

hence,

f^-(x)=x-3

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Helga [31]

Answer:

The step 4 is not what he should have done. But the wrong is step 5, because if he added -2x both sides, it would give the following equation:

x-12=-4x+6

and not x-12=6

Note that in step 4 he should have added 2x and not -2x to both sides, but we still have the equality. The problem is that step 5 is totally wrong.

I don't know what answer is expected to this question, but I would mark step 5, because this is mathematically wrong.  

Solving the equation

3(x-4)=-4-2(x-5)

Using distribution

3x-12=-4-2x+10\\3x-12=-2+6

Add 2x both sides

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Add 12 both sides

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Divide both sides by 5

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3 years ago
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Answer:

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