Question 259561
All t other than the values that make the denominator equal to zero. 
{{{ t^2-14t+33=(t-11)(t-3)=0}}}
{{{t-11=0}}}

{{{t=11}}}

and
{{{t-3=0}}}

{{{t=3}}}

The domain is then 
({{{-infinity}}},{{{3}}}) U ({{{3}}},{{{11}}}) U ({{{11}}},{{{infinity}}})
.
.
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{{{ graph( 300, 300, -5, 15, -5, 5, x/(x^2-14x+33)) }}}