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3 years ago

If f(x)=2x+1/x Find f^-1(x)

Mathematics

2 answers:

Yuliya22 [10]3 years ago

8 0

Answer:

junk by did judo shock oka his much half nu

Masteriza [31]3 years ago

3 0

Answer:

• Let f(x) be m

$m = \frac{2x + 1}{x} \\ \\ mx = 2x + 1 \\ \\ mx - 2x = 1 \\ \\ x(m - 2) = 1 \\ \\ x = \frac{1}{m - 2}$

Therefore:

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

You might be interested in

X^4=15 is an exponential equation?

miskamm [114]

Answer:

No. It is not an Exponential Equation.

Step-by-step explanation:

Given $x^{4} =15$

By the Definition of Exponential Equation which states.

"The equation is said to be an exponential equation when it has a variable occurred in the exponent and which have the same base."

For Example:

All given below are said to be exponential equations.

$5^{x} =5^{2} \\7^{x}=49\\$

which can be rewritten as

$7^{x}=7^{2}$

Now in the given equation $x^{4}=15$ it doesn't have same base neither any means the base can be made same,hence the given equation is not an exponential equation

8 0

3 years ago

You are planning on applying to the Knirhsdaeh institute as a psychology counselor. They hire millions of psychologists around t

elena-14-01-66 [18.8K]

Answer:

The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor

(75.4206, 86.5794)

Step-by-step explanation:

Step(i):-

Given that the mean of the sample = $81 k

Given that the size of the sample 'n' = 23

Given that the standard deviation for the salaries is $13 k

Step(ii):-

98% of the confidence interval for the true average salary of Knirhsdaeh employees is determined by

 $(x^{-} - t_{0.02} \frac{S.D}{\sqrt{n} } , x^{-} + t_{0.02} \frac{S.D}{\sqrt{n} })$ 

Degrees of freedom = n-1 = 23-1 =22

 $t_{0.02} = 2.5083$ 

$(81 - 2.0583 \frac{13}{\sqrt{23} } , 81 + 2.0583 \frac{13}{\sqrt{23} } )$

( 81 - 5.57940 , 81 + 5.57940)

(75.4206, 86.5794)

Final answer:-

The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor

(75.4206, 86.5794)

7 0

3 years ago

147 is 35%of what number

pantera1 [17]

X - the number

$35\%x=147 \\
0.35x=147 \ \ |\hbox{divide both sides by 0.35} \\
x=420$

147 is 35% of 420.

4 0

3 years ago

Read 2 more answers

A barber cuts 3 people hair in 35 min . Each hair cut takes at least 10 min, and the first haircut takes the most time .list one

Iteru [2.4K]

The first hair cut takes 15 mins the second hair cut takes 10 and the third takes 10

4 0

3 years ago

{3x+2y = -5 {4X-3y = -18

larisa86 [58]

You make an x= ... equation by moving 2y to the other side and /3 (in the first equation) then you fill in x into the second equation and you calculate y. If you have Y you fill it in in the first equation.

6 0

4 years ago