|  | @@ -97,7 +97,7 @@ Modeling
 | 
	
		
			
				|  |  |     Algorithmically this means that given :math:`y`, compute :math:`x =
 | 
	
		
			
				|  |  |     f^{-1}(y)` by whatever means you can. Evaluate the Jacobian of
 | 
	
		
			
				|  |  |     :math:`f` at :math:`x`. If the Jacobian matrix is invertible, then
 | 
	
		
			
				|  |  | -   the inverse is the Jacobian of the inverse at :math:`y`.
 | 
	
		
			
				|  |  | +   its inverse is the Jacobian of :math:`f^{-1}(y)` at  :math:`y`.
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  |     One can put this into practice with the following code fragment.
 | 
	
		
			
				|  |  |  
 |