anonymous
  • anonymous
Need help. Solve for F(a).Let F(a) be the exact area under the graph of y =(x^2)(e^(−x)) between x = 0 and x = a for a > 0.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Psymon
  • Psymon
Looks like you would need integration by parts.
anonymous
  • anonymous
i did the general part of that and got (-e^(-x))(x^2+2x+2)
anonymous
  • anonymous
so would the final answer be(-e^(-a))(a^2+2a+2)+2

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Psymon
  • Psymon
Alright, cool, thats right. Just wanted to check it. So yeah, now it's just F(a) - F(0) and yep, looks like you got it : )
anonymous
  • anonymous
sweet thanks for some reason i kept doing something wrong before. but now when i look at the problem i realized i messed up on the signs....
Psymon
  • Psymon
At least its just a small mistake and not a concept misunderstanding. Good job : )
anonymous
  • anonymous
Thanks for the help
Psymon
  • Psymon
Mhm. Yw.

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