# Interesting integral

Is there any way of evaluating the following integral:

$$\int sin{(\frac{2x+3}{x^2+3x-2})} dx$$

I have thought hard but cannot find an answer.

Obviously, the denominator is the differential of the numerator. But a function is being taken of this fraction...

Mark44
Mentor
Is there any way of evaluating the following integral:
I doubt it.
Astudious said:
$$\int sin{(\frac{2x+3}{x^2+3x-2})} dx$$

I have thought hard but cannot find an answer.

Obviously, the denominator is the differential of the numerator. But a function is being taken of this fraction...
No, the numerator (top) is the differential of the denominator (bottom).