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Science Memes @mander.xyz

Gollum @feddit.de

12 mo. ago • 94%

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14 comments

Nice.

26
Can someone explain this? Integral from 10 to 13 of 2x? It's been a long time since calculus for me, but isn't that like 2x² + c or something like that?

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- 36
  
  Is this Wolfram Alpha?
  
  4
- Just x²+c, but when you're integrating between limits the +c doesn't matter - so you're just left with the difference between 13² and 10²...
  
  16
  
  It isn't that it doesn't matter, constant of integration is only used for indefinite integrals.
  
  4
- The integral of 2xdx is x^2 + c, and it’s evaluated from 10 to 13. So you’d have the following:
  
  (13^2 + c) - (10^2 + c).
  
  The c’s cancel. I’ll leave you to do the rest…
  
  9
  
  69
  
  7
- x² + c is the general integral of 2x - this is looking for the area between the graph of 2x and the x-Axis between 10 and 13 which is 69
  
  1
le epic 69

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