Cosmology & Astronomy on Khan Academy: The Earth is huge, but it is tiny compared to the Sun (which is super huge). But the Sun is tiny compared to the solar system which is tiny compared to the distance to the next star. Oh, did we mention that there are over 100 billion stars in our galaxy (which is about 100,000 light years in diameter) which is one of hundreds of billions of galaxies in just the observable universe (which might be infinite for all we know). Don’t feel small. We find it liberating. Your everyday human stresses are nothing compared to this enormity that we are a part of. Enjoy the fact that we get to be part of this vastness!

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We’ve also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

Integral of 1/(sin(x)cos(x)) (trigonometric identities + substitution) – How to integrate it step by step! ##################################### ############## PLAYLISTS ############## ##################################### ———————————————————————————- ———————— Integration methods ———————— ———————————————————————————- Substitution : https://www.youtube.com/playlist?list=PLpfQkODxXi4-7Nc5OlXc0zs81dgwnQQc4 By parts : https://www.youtube.com/playlist?list=PLpfQkODxXi4-GdH-W7YvTuKmK_mFNxW_h Partial fraction decomposition : https://www.youtube.com/playlist?list=PLpfQkODxXi4-9Ts0IMGxzI5ssWNBT9aXJ Weierstrass substitution : https://www.youtube.com/playlist?list=PLpfQkODxXi4-8kbKt63rs1xwo6e3yAage ———————————————————————————- —————— Integrals having a function ——————– ———————————————————————————- Integrals with square root :…

Ground Improvement Techniques by Dr. G.L. Sivakumar Babu, Department of Civil Engineering, IISc Bangalore. For more details on NPTEL visit http://nptel.iitm.ac.in

Amazing, Life Changing Tutor
Before I met Jonathan, I was struggling through most of my STEM classes because I was simply not studying properly. He taught me all kinds of new study habits that would help me to save time, raise my grades, and lower my stress. Jonathan was specifically tutoring me in vector calculus and is an amazing tutor on the subject. You will walk away from a lesson with a game plan knowing exactly what you need to do before your next session with him or before your next exam in order to do well in the course. I highly recommend him as a tutor.

Amazing, Life Changing Tutor
Before I met Jonathan, I was struggling through most of my STEM classes because I was simply not studying properly. He taught me all kinds of new study habits that would help me to save time, raise my grades, and lower my stress. Jonathan was specifically tutoring me in vector calculus and is an amazing tutor on the subject. You will walk away from a lesson with a game plan knowing exactly what you need to do before your next session with him or before your next exam in order to do well in the course. I highly recommend him as a tutor.

You must log in to post a comment.