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Friday, April 4, 2014

Inverse function

Questions :

1.Decide whether each function is 1-1 or not




1. Not one to one function .
2. One to one function .
3. One to one function .
4. Not one to one function .

2. Determine whether each graph is the  graph of a 1-1 function (using the horizontal  line test





a. One to one function .
b. Not one to one function .

3. let
f(x)=2x+5
and
g(x)=12x5
Is ''g'' the inverse function of ''f'' ?

x=2y+5y=x52
g function is not the inverse of f function .

4. Let
f(x)=x31

and
g(x)=3x+1
Is g the inverse of f ?

x=y31y=3x+1
so g is the inverse of f

3. answer the following question :

1.
 f1=(8,2),(1,1),(0,0),(1,1),(8,2)

2.
 g1=(5,2)(2,1)(1,0)(5,2)
3.