daltonsmith1413 daltonsmith1413

22-06-2016
Mathematics

contestada

Let f(x) = x2 − 81. Find f−1(x).

Respuesta :

olemakpadu olemakpadu

26-06-2016

f(x) = x² - 81

Finding f⁻¹(x) the inverse function

Let y = f(x) and solve for x.

y = x² - 81

y + 81 = x²

x² = y + 81

x = √(y + 81)

Recall f(x) = y, that means x = f⁻¹(y)

x = √(y + 81)

f⁻¹(y) = √(y + 81)

Therefore f⁻¹(x) = √(x + 81)

Answer Link

Otras preguntas

What is 2+2 In decimal form

Which setting would best fit the theme of humanities struggle to achieve objectivity and impartiality? A. Classroom B. A battlefield c. A quart room D. A deser

Which organ stores the compounds into which glucose is converted by insulin?

At times information can still be obtained about an organism even when the fossil itself

Why do Lean-Agile Leaders try to connect the silos of business, system engineering, hardware, software, test, and quality assurance?

Fed chairman ben barnanke was not happy about bailing out institutions that had gotten themselves in trouble by taking on too much risk. why did the fed do it

The measure of ∠A is 6° greater than the measure of ∠B. The two angles are complementary. Find the measure of each angle.

To keep employees from shirking, you can invest in greater monitoring when employees fail to respond to incentive contracts

The sum of the squares of two consecutive positive even integers is 100. find the two integers

Beth is 2 years older than Jimmy, and in 3 years the sum of their ages will be twice as much as the sum of their ages 3 years ago. Find their present ages.