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![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
![a. The alternative version of problem (5) by Integral Calculator online... | Download Scientific Diagram a. The alternative version of problem (5) by Integral Calculator online... | Download Scientific Diagram](https://www.researchgate.net/publication/333142744/figure/fig1/AS:759228046245888@1558025480004/a-The-alternative-version-of-problem-5-by-Integral-Calculator-online-application.png)