- #1
Really?.Scott said:The domain is defined as -0.5 to +0.5.
The resulting range is -0.4 to +0.5.
.Scott said:I believe it is injective but not surjective.
The domain is defined as -0.5 to +0.5.
The resulting range is -0.4 to +0.5.
So every value in the domain yields a unique value in the range (injective).
But there are some values in the potential range (-0.5 to -0.4 and 0.4 to 0.5) which are not used.
I fixed it.DrClaude said:Really?
No, still wrong. But please let the OP answer now (this is the homework forum)..Scott said:I fixed it.
the B set isDrClaude said:No, still wrong. But please let the OP answer now (this is the homework forum).
But is it one-to-one? Do you get a unique value for each ##x## in the domain of ##f##?alijan kk said:but this function is also one to one ,, so called injective ?
it is not ijective because, the range is not a subset ! "serjective but not injective" should be correct ? and serjective has range=B [-0.5,0.5]DrClaude said:But is it one-to-one? Do you get a unique value for each ##x## in the domain of ##f##?
You should also check if it is surjective or not.
What is "MCQS"?alijan kk said:MCQS is in the image
Noted...DrClaude said:But please let the OP answer now (this is the homework forum).
multiple choice questionMark44 said:Noted...
it is therefore requested kindly give me a hint or tell me the answerMark44 said:Noted...
Post #3 is a hint. A graph of this function would be helpful.alijan kk said:it is therefore requested kindly give me a hint or tell me the answer
domain is all real numbers,, and range is [-0.5,0.5]Mark44 said:Post #3 is a hint. A graph of this function would be helpful.
By forum rules, we can steer you in the right direction, but we can't just tell you the answer.
If you solve the equation ##y = \frac 1 {1 + x^2}## for x, do you get a single value of x for each y value? If so, the original function is invertible, and therefore one-to-one (i.e., injective).alijan kk said:domain is all real numbers,, and range is [-0.5,0.5]
Your thread would be improved if you were to display the image, rather than just showing the thumb-nail.alijan kk said:Homework Statement
MCQS is in the image,
Homework Equations
The Attempt at a Solution
as the range of this function is the subset of B , it is an injective function ?
option one is correct ?
1. What is a function?
A function is a mathematical relationship between an input and an output. It takes in one or more inputs and gives out a corresponding output.2. How do you determine the type of a function?
The type of a function is determined by its input and output values. There are different types of functions such as linear, quadratic, exponential, logarithmic, and trigonometric functions.3. What is a linear function?
A linear function is a type of function where the input and output values have a constant rate of change. It can be represented by a straight line on a graph.4. What is an exponential function?
An exponential function is a type of function where the input and output values have a constant ratio. It can be represented by a curved line on a graph.5. How do you graph a function?
To graph a function, you can make a table of values by plugging in different input values and calculating the corresponding output values. Then, plot these points on a graph and connect them to create a curve or a line, depending on the type of function.