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k0ka [10]
3 years ago
8

Given f(x) = the quantity of x minus 1, divided by 2, solve for f−1(5). 2 9 11 15

Mathematics
2 answers:
bearhunter [10]3 years ago
7 0
F ( x ) = ( x - 1 ) / 2
y = ( x - 1 ) / 2
x - 1 = 2 y
x = 2 y + 1
f ^(-1) ( x ) = 2 x + 1  ( this is inverse function )
f ^(-1) ( 5 ) = 2 * 5 + 1 = 10 + 1 = 11
Answer: C ) 11 
podryga [215]3 years ago
4 0

Answer:

f^{-1}(5)=11

Step-by-step explanation:

Step 1

Find the inverse function

we have

f(x)=\frac{x-1}{2}

Let

y=f(x)

y=\frac{x-1}{2}

Exchanges the variables x for y and y for x

x=\frac{y-1}{2}

Isolate the variable y

y=2x+1

Let

f^{-1}(x)=y

f^{-1}(x)=2x+1 ------> inverse function

Step 2

Find f^{-1}(5)

Substitute the value of x=5 in the inverse function

f^{-1}(5)=2(5)+1=11

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Hello, Can someone please explain on how to do this? thank you!
Marrrta [24]
Steps:

1) determine the domain

2) determine the extreme limits of the function

3) determine critical points (where the derivative is zero)

4) determine the intercepts with the axis

5) do a table

6) put the data on a system of coordinates

7) graph: join the points with the best smooth curve

Solution:

1) domain

The logarithmic function is defined for positive real numbers, then you need to state x - 3 > 0

=> x > 3 <-------- domain

2) extreme limits of the function

Limit log (x - 3) when x → ∞ = ∞

Limit log (x - 3) when x → 3+ = - ∞ => the line x = 3 is a vertical asymptote

3) critical points

dy / dx = 0 => 1 / x - 3 which is never true, so there are not critical points (not relative maxima or minima)

4) determine the intercepts with the axis

x-intercept: y = 0 => log (x - 3) = 0 => x - 3 = 1 => x = 4

y-intercept: The function never intercepts the y-axis because x cannot not be 0.

5) do a table

 x                          y = log (x - 3)

limit x → 3+            - ∞

3.000000001        log (3.000000001 -3) = -9

3.0001                  log (3.0001 - 3) = - 4

3.1                       log (3.1 - 3) = - 1

4                          log (4 - 3) = 0

13                       log (13 - 3) = 1

103                     log (103 - 3) = 10

lim x → ∞             ∞

Now, with all that information you can graph the function: put the data on the coordinate system and join the points with a smooth curve.
7 0
3 years ago
Read 2 more answers
Help please me!!!!!!!!!!!
AlexFokin [52]
D:  We solve this in exactly the same way in which we solved the previous area problem.  Side length is s, area is s^2.  Here, side length is 5 in; area is 25 in^2.
the problem does say, however, not to include units in your answer.  Thus, just write "25."
5 0
2 years ago
Read 2 more answers
Determine whether (3,2) is a solution of y = 3x +2.​
Snowcat [4.5K]

Answer:

This point is not a solution to the equivalence

Step-by-step explanation:

Becouse if we put x= 3 then y= 11

y = 3 \times 3 + 2 = 11

6 0
2 years ago
Cube - Finding Volume when you have Surface Area (no model of prism for this question)
mr Goodwill [35]

Answer:

512 cm^3

Step-by-step explanation:

Divide 384 by 6 to find the surface area of one face of the cube. 384/6 = 64.

Find the square root of 64 to find both the length and width of the square. They are equal in a square. \sqrt{64} = 8 = x

Volume = xyz or x^3

8^3 = 512

5 0
3 years ago
Read 2 more answers
Find MN<br><br> LM = 3y + 4<br> MN = 7y + 9<br> LN = 143
ahrayia [7]

Answer:

B. 100

Step-by-step explanation:

3y+4+7y+9=143

10x+13=143  143-13=130

10x=130 divide both sides by 10 130/10= 13 x=13

MN=7(13)=91+9=100

LN=3(13)=39+4=43

100+43

6 0
2 years ago
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