The Power Rule for Derivatives

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Uploaded by on Jan 24, 2010

The world famous power rule for derivatives along with some typical applications

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Education

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  • do 1/3√t

  • dude you solve my homework one of the problems there was my actually homework lol.. thanks man this helps a lot to clear my mind..

  • @BlueTheRaichu No problem!

  • @lol5748 Thank you. That helped. ^_^

  • @BlueTheRaichu Well, as it is written at 2:50, it is 3(x^1/2) because you take the exponent of "x" and multiply by the coefficient of "x" when you use power rule. For example: If you plug in 4 for x into the function f(x) = 3x^1/2 as it is written at 2:50, you take the square root of 4 (which is 2) then multiply by 3. So, it would come out to be f(x) = 3 (2) = 6. To answer your original question, 3(x^1/2) is not equal to (3x)^1/2

  • @lol5748 I infer that when you wrote it at 2:50 , that it would be (3x)^1/2, in other words, the square root of "3x." Now that I think about it... perhaps that is what it is. When you mentioned involving parentheses, I now realize what it could actually be equivalent to. 3x could be inferred as a group, which altogether is taken the root of by "2." So, to notify you that what you assume is what I had implied, I shall respond by saying: I actually implied to take the square root of "3x."

  • @BlueTheRaichu It depends whether you are talking about (3x)^1/2 or 3(x^1/2). (3x)^1/2 = the square root of "3x", but 3(x^1/2) = 3 times the square root of x. The way you wrote it, i would assume that you meant "3 times the square root of x" I assume this simply because you didn't put parenthesis around the "3x", so you probably meant take the square root of x, then multiply that quantity by 3. Let me know if that's what you meant!

  • Is 3x^1/2 equivalent to the square root of 3x, or 3 times the square root of x?

  • Nice Dude Keep it up ur better then my teacher my teacher is garbage

  • I love this! Thanks

    It's going to help me on my test tomorrow on derivatives :D

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