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  1. ∑ _{ r =1, n} 1= n ∑ _{ r =1, n} r = (n+1)·n/2 ∑ _{ r =1, n} r²= n·(n+1)·(2n+1)/6 ==>...2nr +r² -n - r ) = (n²-n)·∑ _{ r =1, n} 1 + (2n-1)· ∑ _{ r =1, n} r + ∑ _{ r =1, n} r² = (n²-n)·n + (2n-1)·(n...

    1 Answers · Science & Mathematics · 26/07/2009

  2. R =4x^2+8x C=x^2+2x R -C= 3x^2+6x ( R -C)'= 6x+6 ( R -C)"= 6 Now ( R -C...

    2 Answers · Science & Mathematics · 13/09/2013

  3. | r (t)| = constant implies that 1. r (t) either doesn't change with t, r '(t)=0 or 2. its...would change also by the triangle inequality. In either case since 1. r '(t)=0 or 2. r (t) dot r '(t) = r (t) r '(t)cos(90) = 0...

    1 Answers · Science & Mathematics · 17/04/2015

  4. r ^2+3r-2 = 0 Factorize the equation. then ( r +1)( r -3) = 0 Therefore, r = -1 & 3

    3 Answers · Science & Mathematics · 14/10/2008

  5. R ' or also known as R -prime can, but doesn't always have to be the original R . It's there to show you that you can place any other alkane substitute in that...

    3 Answers · Science & Mathematics · 24/04/2010

  6. 0.2 + r = 0.2r − 0.06 + 0.3r Fist, let's simplify the right side side: r + 0.2 = 0.5r − 0.06 Next, isolate r and simplify. ( r + 0.2) - 0.5r - 0.2...

    12 Answers · Science & Mathematics · 16/10/2007

  7. ... consists of: r = radius measure(magnitude) theta = angle measure(... ( a , ib) is now ( r *cos(theta) , r *sin(theta) Finally: your answer...

    2 Answers · Science & Mathematics · 31/05/2008

  8. description of r : look at the figure where potential is required at point P ...)----------------------. (P) .... <----------- r ---------> r & Q are given k = 8.987 X 10^9 N...

    3 Answers · Science & Mathematics · 01/02/2011

  9. I = (2V/ R ) + 2r I - (2V/ R ) = 2r r = (1/2) * [I - (2V/ R ... - IR r = (2V - IR) / 2I r = (V/I) - ( R /2)

    3 Answers · Science & Mathematics · 16/01/2014

  10. C=K(Rr/ R - r ) Divide both sides by K: C/K = (Rr... = Cr/K Extract R : R (C/K - r ) = Cr/K Divide both sides by (C/K - r ...

    4 Answers · Education & Reference · 05/10/2009

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