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Grace [21]
3 years ago
9

Which function represents the inverse function of the function f(x)= x^2+5

Mathematics
2 answers:
zhuklara [117]3 years ago
8 0

The inverse function : f^{-1}(x)=\sqrt{x-5}

<h3>Further explanation</h3>

A ƒunction can be expressed in the form of a cartesian diagram, sequential pairs, or arrow diagrams  

If a ƒunction (f) pairs members of set A to set B, then the inverse of ƒunction f (f⁻¹) pairs members of set B to A, or easily f⁻¹ is the opposite of f  

or in the form of equations  :

f (x) = y if and only if g (y) = x  

g (y) is called the inverse of f (x)  

The step for determining the inverse ƒunction  

1. expresses the ƒunction y = f (x) in the form x = f (y)  

2. f⁻¹(y) = g(y)  

3. Replace the letter y with x so we get the inverse ƒunction formula f⁻¹(x)  

Known :  

f (x) =x² +5  

suppose f (x) = y then  

y = x² +5  

x ² = y-5

\displaystyle  x=\sqrt{y-5}\\\\f^{-1}(y)=\sqrt{y-5}\\\\f^{-1}(x)=\sqrt{x-5}

<h3>Learn more</h3>

the inverse of the function f(x) =2x-10

brainly.com/question/628130

Keywords : function, invers

#LearnWithBrainly

Katen [24]3 years ago
5 0

Answer:

f^{-1}(x)=(+/-)\sqrt{x-5}

Step-by-step explanation:

we have the function

f(x)=x^{2} +5

Let

y=f(x)

y=x^{2} +5

step 1

Exchange the variables, x for y and y for x

x=y^{2} +5

step 2

Isolate the variable y

Subtract 5 both sides

x-5=y^{2}

step 3

Take square root both sides

y=(+/-)\sqrt{x-5}

step 4

Find the inverse

f^{-1}(x)=y

so

f^{-1}(x)=(+/-)\sqrt{x-5}

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