![Symbolab Blog: Advanced Math Solutions – Integral Calculator, advanced trigonometric functions, Part II Symbolab Blog: Advanced Math Solutions – Integral Calculator, advanced trigonometric functions, Part II](http://2.bp.blogspot.com/-sj9vpRJJC3A/VE-jXmJzE-I/AAAAAAAAAmw/-1mkljkeaPE/s1600/1.png)
Symbolab Blog: Advanced Math Solutions – Integral Calculator, advanced trigonometric functions, Part II
![Could someone help me solve this? I tried an integral calculator online but it gave me a solution with something called sec. I don't know what sec is, I haven't learned about Could someone help me solve this? I tried an integral calculator online but it gave me a solution with something called sec. I don't know what sec is, I haven't learned about](https://preview.redd.it/could-someone-help-me-solve-this-i-tried-an-integral-v0-xspizs23kp3a1.png?width=640&crop=smart&auto=webp&s=ab22e400ad624e7c8e66a91a7bebe335cea243b0)
Could someone help me solve this? I tried an integral calculator online but it gave me a solution with something called sec. I don't know what sec is, I haven't learned about
![How to calculate this integral $\int\frac{x^4-1}{x^2\sqrt{x^4+x^2+1}}$? - Mathematics Stack Exchange How to calculate this integral $\int\frac{x^4-1}{x^2\sqrt{x^4+x^2+1}}$? - Mathematics Stack Exchange](https://i.stack.imgur.com/XD5Fi.png)