I would be glad if someone could explain why the trigonometric substitution x+1 = 2tanO doesn't work here

Welcome to r/calculus - a space for learning calculus and related disciplines. Remember to read the rules before posting and flair your posts appropriately.
How would one play this measure? What is this kind of measure called?

A location to find learning resources and ask questions about learning all styles of music on the piano.
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A space for Xamarin developers to ask questions or discuss their latest projects.
אופציות אחרי תיכון
A place for discussion of Israeli life and culture, but most of all for participating in the time honored tradition of arguing.
how do apps like whatsapp receive messages when app is not in the foreground?
A place for /r/android_devs to discuss, ask, help and communicate with other Android devs.
how do apps like whatsapp receive messages when the app is not in the foreground?
A subreddit to talk about Android Apps
What is the difference between implementing InotifyPropertChanged vs ReactiveObject in a viewmodel?
All about the object-oriented programming language C#.
A little tip that i learned
A community for people with diabetes insipidus
[D] Im planning on learning ML, where should i start?
Beginners -> /r/mlquestions or /r/learnmachinelearning , AGI -> /r/singularity, career advices -> /r/cscareerquestions, datasets -> r/datasets
[Q] Im planning on learning ML, Where should i start?
Beginners -> /r/mlquestions or /r/learnmachinelearning , AGI -> /r/singularity, career advices -> /r/cscareerquestions, datasets -> r/datasets
What authentication method should i use for my ms sql server if my domain is android?
Microsoft SQL Server Administration and T-SQL Programming including sql tutorials, training, MS SQL Server Certification, SQL Server Database Resources.
How should a user authenticate and fetch data with an sql server
The goal of /r/SQL is to provide a place for interesting and informative SQL content and discussions.
Beginner's gym plan
A place for the pursuit of physical fitness goals. Please see the r/Fitness Wiki and FAQ at https://thefitness.wiki for help with common questions.
Does your protein powder have this weird old milk taste?
A place to discuss anything related to protein, protein powders (Whey, Casein, Soy & Pea protein etc), smoothies, protein bars, and more. Feel free to share recommendations, recipes, and questions about macros.
Share your bedtime routine!
A community for people with diabetes insipidus
Is protein powder supposed to have a bitter taste?
A place for the pursuit of physical fitness goals. Please see the r/Fitness Wiki and FAQ at https://thefitness.wiki for help with common questions.
I feel like I'm falling apart
The mental health subreddit is the central forum to discuss, vent, support and share information about mental health, illness and wellness.
Where can I buy protein powder online in Israel?
A place for discussion of Israeli life and culture, but most of all for participating in the time honored tradition of arguing.
Foul smelling vitamin d
A subreddit designed for discussion of supplements and nutraceuticals; for health, performance, or any intended (or not intended) purpose. Not a place for discussion of illicit and illegal compounds.
Getting no sleep
A community for people with diabetes insipidus
Nasal spray no longer in the market?
A community for people with diabetes insipidus
What happens if i take too much desmopressin?
A community for people with diabetes insipidus