# Trying to study for my exam and would like to see how u would solve functions so plz

• Nov 26th 2012, 02:29 PM
math333
Trying to study for my exam and would like to see how u would solve functions so plz
1.Let A = {1; 2; 3; 4} and B = {a; b; c}. Give an example of a function f:A Bthat is neither one to one nor onto.
2. Determine ifthe function f:- {0} defined as f(x) =1/x+ 1 is one to one and onto.

3. Determine ifthe function f : ℝ- {2} - {5} defined by f(x) =5x + 1/x - 2is invertible. If it is define the inverse function f^-1.

4. Determine ifthe function f:- {1} defined by f(x) =(x + 1/x – 1)^3is one to one .

5. Determine ifthe function f: defined as f(x) = 3 (-1)^x is one to one.

6. Determine if the function f:{0, 1} defined as f(x) = 3 -1)^x is one to one.
• Nov 26th 2012, 02:38 PM
Plato
Re: Trying to study for my exam and would like to see how u would solve functions so
Quote:

Originally Posted by math333
1.Let A = {1; 2; 3; 4} and B = {a; b; c}. Give an example of a function f:A Bthat is neither one to one nor onto.
2. Determine ifthe function f:- {0} defined as f(x) =1/x+ 1 is one to one and onto.

3. Determine ifthe function f : ℝ- {2} - {5} defined by f(x) =5x + 1/x - 2is invertible. If it is define the inverse function f^-1.

4. Determine ifthe function f:- {1} defined by f(x) =(x + 1/x – 1)^3is one to one .

5. Determine ifthe function f: defined as f(x) = 3 (-1)^x is one to one.

6. Determine if the function f:{0, 1} defined as f(x) = 3 -1)^x is one to one.

That is too many questions for one thread.
You have simply listed the question.
You have shown no effort whatsoever.

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