adammomhibanabae adammomhibanabae

23-12-2016
Mathematics

contestada

If f(x) = log2 (x + 4), what is f−1(3)?

Respuesta :

Lampa20 Lampa20

28-12-2016

t = log2 (x+4)
2^t = x+4
x = 2^t - 4

So the goal is to set f(x) equal to new variable and express x depending on that variable. that is what f-1(x) means

to find f-1(3) we have to express 3 in our new function f(t)

f(t) = 2^3 - 4 = 4

Answer Link

Otras preguntas

In the US, What is the DMV?

what are the Confederate states?

How Do I Write an Anonymous Letter?

what is answer to x+10=-13 what does x equal

How many levels of government are there in China?

Help please, What does "Happy-Go-Lucky" Mean?

Find an equation of the line that (a) has the same y-intercept as the line and (b) is parallel to the line .

The product of the first and last digit is equal to 48 The sum of the last two digits is greater than 7The sum of the first two digits is equal to 9

When plastic deformation of a material occurs, the material _____.

1.Heat Energy is also known as?2.Energy from the sun is?3.Three energy transformations in turning on a flashlight?4.Energy transformation in a car starting and