how do you prove that the unction f(x) = tan(x+x^2)/(1+x+x^2) is continuous for all x=[0,1] except at one point.
i found out that it is not cont at x= 0.84936..but i dont know how to prove that it is continuous now..
The function:
is an elementary function, for all real and does not exists. Solving you'll obtain the point in where is not continuous:
Regards.
Edited: Sorry, I didn't see the previous answers.