Adding complex numbers and Argand Diagrams | Precalculus | Khan Academy

Missed the previous lesson?

Precalculus on Khan Academy: You may think that precalculus is simply the course you take before calculus. You would be right, of course, but that definition doesn't mean anything unless you have some knowledge of what calculus is. Let's keep it simple, shall we? Calculus is a conceptual framework which provides systematic techniques for solving problems. These problems are appropriately applicable to analytic geometry and algebra. Therefore....precalculus gives you the background for the mathematical concepts, problems, issues and techniques that appear in calculus, including trigonometry, functions, complex numbers, vectors, matrices, and others. There you have it ladies and gentlemen....an introduction to precalculus!

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

Subscribe to Khan Academy’s Precalculus channel:

[seansomers]

You guys pretty much carrying the entire education system
Thx so much 👍👍

[matematicacomdemoclis]

I liked this a lot! Now, I am going to do my own video about this. The first one I will make in English. It's going to be so much fun!

[markseidler]

Is "imagination" PERPENDICULAR to "reality"? I just blew my own mind.

[معاذاحمد-ذز]

Thank you so much your videos are piece of art

[xSLUSHIEx]

perfect time to upload this! just when I needed it haha

[abdulquadiransari]

You should have projected the component on the x axis and y axis. Then you should have added them and obtain the resultant. This way it would have been clearer

[mythcrafts]

We just got that lesson last weak!
I am currently working on polynomial problem solving problems.

[sonamshrish]

Why not to think about what it means to add and subtract complex numbers? Isn't it a question to be answered?