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WITCHER [35]
3 years ago
7

If f(x) =

"absmiddle" class="latex-formula">, what is the equation for f–1(x)?
Mathematics
2 answers:
Delvig [45]3 years ago
7 0

Answer:

f^{-1}(x) = x^{2}-6x+9 is the answer.

Step-by-step explanation:

If the function is f(x) = √x + 3

We will write the function as an equation

y = √x + 3

√x = y - 3

x = (y -3)²

x = y² -6y +9

Now we will convert the equation into a function

f^{-1}(x) = x^{2}-6x+9

Therefore the inverse function f(x) = x²-6x+9

mart [117]3 years ago
4 0

Answer:

f⁻¹(x) = (x-3)²

Step-by-step explanation:

We have given a function.

f(x) = √x + 3

We have to find inverse of above function.

f⁻¹(x) = ?

Putting y = f(x) in above equation, we have

y = √x + 3

We have to separate x from above equation.

Adding -3 to both sides of above equation, we have

y-3 = √x+3-3

y-3 = √x

Taking square to both sides of above equation, we have

(y-3)² = (√x)²

(y-3)² = x

Swapping  above equation , we have

x = (y-3)²

Putting x = f⁻¹(y) in above equation, we have

f⁻¹(y) = (y-3)²

Replacing y with x , we have

f⁻¹(x) = (x-3)² which is the answer.

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