Search 80,000+ tutors
0 0

# Integral Problem

They are essentially the same function. I think both answers should be zero. Only the first integral question utilize more complex approximation, but the answer is not that much different. −1.110223024625157×10−16 = -0.0000000000000001≈0

This is the answer I need.
Thank you very much, Chen Jang.
Hi R,

They are not the same function. If you are unsure, graph them.

Neither integral is difficult to calculate. The first integral, for cos(4x)/(sin(2x)cos(2x)), try looking at ln(sin(2x)cos(2x)), and be sure you remember the trig identity cos(2u)=cos2(u)-sin2(u).

The second integral is just a substitution problem. Best luck

Hi, Pierce.
Thank you very much for your response.

But, I think you made a mistake. You said that they are not the same function and you asked me to graph them.
In fact, I graphed them and found that both of them are really the same function.

We can use any graph program to prove that and we will always get the same result.
I use this site: graphsketch.com.