4 Replies to “The aggregate production function and growth | APⓇ Macroeconomics | Khan Academy”

  1. I have been watching your old math videos for the past two years. It's safe to say that I can recognize your voice out of a million, I can't say the same about my father. Sometimes your voice comes in my dreams, I don't know why.
    I'am graduating this year and I couldn't have done it without you. Thank you for all the efforts you put into these videos. Thank you Khan Academy.

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