Question 1174991
<pre>

{{{2sec^2(x)-3sec^""(x)-2=0}}}

{{{(2sec^""(x)^""+1)(sec^""(x)^""-2)=0}}}

{{{matrix(4,1,2sec^""(x)^""+1=0,      
              2sec^""(x)=-1,               
               sec^""(x)=-1/2,                
             matrix(1,2,no,"solution!"))}}}   {{{matrix(3,1,

sec^""(x)^""-2=0,
sec^""(x)=2, 
x = matrix(1,3,pi/3+2pi*n,OR,5pi/3+2pi*n))}}}

The reason there is no solution to the first part, but there is to
the second part is because all secants and cosecants are greater than
1 in absolute value.

Edwin</pre>