



Can a function’s domain and range be the same?
Yes. For example, the domain and range of the cube root function are both the set of all real numbers.
Finding domains and ranges of the toolkit functions
We will now return to our set of toolkit functions to determine the domain and range of each.
Given the formula for a function, determine the domain and range.
 Exclude from the domain any input values that result in division by zero.
 Exclude from the domain any input values that have nonreal (or undefined) number outputs.
 Use the valid input values to determine the range of the output values.
 Look at the function graph and table values to confirm the actual function behavior.
Questions & Answers
f(x)=x/x+2 given g(x)=1+2x/1x show that gf(x)=1+2x/3
sebd me some questions about anything ill solve for yall
how to solve x²=2x+8 factorization?
x=2x+8
x2x=2x+82x
x2x=8
x=8
x/1=8/1
x=8
prove:
if x=8
8=2(8)+8
8=16+8
8=8
(PROVEN)
Manifoldee
×=2x8 minus both sides by 2x
Manifoldee
so, x2x=2x+82x
Manifoldee
then cancel out 2x and 2x, cuz 2x2x is obviously zero
Manifoldee
so it would be like this: x2x=8
Manifoldee
then we all know that beside the variable is a number (1): (1)x2x=8
Manifoldee
so we will going to minus that 12=1
Manifoldee
so it would be x=8
Manifoldee
so next step is to cancel out negative number beside x so we get positive x
Manifoldee
so by doing it you need to divide both side by 1 so it would be like this: (1x/1)=(8/1)
Manifoldee
SO THE ANSWER IS X=8
Manifoldee
so we should prove it
Manifoldee
x=2x+8
x2x=8
x=8
x=8 by mantu from India
mantu
lol i just saw its x²
Manifoldee
x²=2x8
x²2x=8
x²=8
x²=8
square root(x²)=square root(8)
x=sq. root(8)
Manifoldee
I mean x²=2x+8 by factorization method
Kristof
I think x=2 or x=4
Kristof
x= 2x+8
×=82x
 2x + x = 8
 x = 8 both sides divided  1
×/1 = 8/1
× =  8 //// from somalia
Mohamed
1KI POWER 1/3 PLEASE SOLUTIONS
can u tell me concepts
Gaurav
Find the possible value of 8.5 using moivre's theorem
which of these functions is not uniformly cintinuous on (0, 1)? sinx
which of these functions is not uniformly continuous on 0,1
solve this equation by completing the square 3x4x7=0
9x16x49=0
7x=49
x=7
x=7
mantu
what's the formula
Modress
deals with circles, angles, and triangles. Usually in the form of Soh cah toa or sine, cosine, and tangent
Thomas
solve for me this equational y=2x
what are you solving for
Alex
you would move everything to the other side leaving x by itself. subtract 2 and divide 1.
Nikki
goodness. I'm sorry. I will let Alex take the wheel.
Nikki
I think he drive me safe
Rubben
how to get 8 trigonometric function of tanA=0.5, given SinA=5/13?
Can you help me?m
More example of algebra and trigo
If one side only of a triangle is given is it possible to solve for the unkown two sides?
please I need help in maths
Okey tell me, what's your problem is?
Navin
Source:
OpenStax, Algebra and trigonometry. OpenStax CNX. Nov 14, 2016 Download for free at https://legacy.cnx.org/content/col11758/1.6
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