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  • (cur | prev) 18:29, 3 November 2008‎ Sshih (Talk)‎ . . (184 bytes) (+4)‎
  • (cur | prev) 18:29, 3 November 2008‎ Sshih (Talk)‎ . . (180 bytes) (+180)‎ . . (New page: Just in case anyone doesn't want to figure out E[X^2] here is how I did it. E[x] = int( x * fX(x),x,a,b) E[x^2] = int( x^2 * fX(x),x,a,b) then I just go Var(x) = E[x^2] - E[x])
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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett