If 

 is invertible, then we can simply choose 

 because for any invertible matrix 

 by definition we must have 

.
We have 

, as

which means 

 is non-singular and has an inverse. The inverse itself would be
 
 
        
        
        
Answer:

Step-by-step explanation:

Make denominators same:

Add the numerators:


Apply the rule:

Therefore,

Cancel out common factor of 2x+1:

 
        
             
        
        
        
In standard form, zero is always on the right:
y = 12 - x^4
y + x^4 - 12 = 0 
End behavior: 
As x approaches ∞, y approaches -∞
As x approaches -∞, t approaches -∞
        
             
        
        
        
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