![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 a Definite Integral Using a Combination of Areas and Properties of Definite Integrals | Calculus | Study.com How to Calculate a Definite Integral Using a Combination of Areas and Properties of Definite Integrals | Calculus | Study.com](https://study.com/cimages/videopreview/videopreview-full/ptck2y3jne.jpg)
How to Calculate a Definite Integral Using a Combination of Areas and Properties of Definite Integrals | Calculus | Study.com
Do calculus students still solve integrals by hand, or is that all done with calculators now? - Quora
![calculus - Evaluate integral limits using the antiderivatives expression, with a calculator - Stack Overflow calculus - Evaluate integral limits using the antiderivatives expression, with a calculator - Stack Overflow](https://i.stack.imgur.com/0lKhm.png)