Posted by Disha on .
What is the value of this limit?
lim (x^2+4/^23x+1)
x>4
A. 1
B. 4
C. 5
D oo
E. oo

calculus 
Disha,
***x^23x+1

calculus 
Reiny,
is this
lim (x^2 + 4)/(x^2  3x + 1)
x > 4
the first step in any limit is to actually sub in the approach value
in this case we get
lim(16+4)/(16  12 + 1)
= 20/5
= 4 , which is a real number, so we have no problem with this limit
the answer is 4 , all done!