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  1. (7 r + 10)/ r ( r + 1)( r + 2) = A/ r + B/( r + 1) + C/( r + 2) A( r + 1...( r + 1) = 7r + 10 r = 0 --> 2A = 10 --> A = 5 r = -1 --> -B = 3 --> B = -3 r = -2 --> 2C = -4...

    1 Answers · Science & Mathematics · 03/01/2013

  2. The answer is r = -.5 I didn't know if you wanted the explanation or not but I...: 2r=-1 Divide 2r by both sides and the answer is r =-1/2 or -.5

    2 Answers · Science & Mathematics · 14/10/2010

  3. Simplify: (square the top and bottom of the fraction, then multiply top by R : 22.4 = 14400R/( R +139)^2 Clear fraction: (multiply both ...

    2 Answers · Science & Mathematics · 21/10/2009

  4. (1+ r /m)^m (1+1/(m/ r ))^m (1+1/(m/ r ))^mr/ r (1+1/(m/ r ))^ r (m/ r ) as m -> infin, so does m/ r (1+1/(m/ r ))^ r (m/ r ) This is e^ r Lets evaluate the limit mathematically...

    3 Answers · Science & Mathematics · 03/12/2008

  5. r is rational, so r = a / b for some integers a and b, where b is not zero...b^2 = 1 This implies b = 1 or = -1 Since r = a / b, it is the case that r = a / 1 = a or r = a / -1 = -a...

    1 Answers · Education & Reference · 30/09/2011

  6. R = 1.1926, -4.1926 Try using MathWay.com Hope this helps!

    4 Answers · Science & Mathematics · 07/04/2013

  7. The - R was the original format of the DVD created, and created... had to make the name different somehow, so the went with + R . They were originally intended for computers and not...

    3 Answers · Computers & Internet · 24/07/2008

  8. ∑ _{ 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

  9. 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

  10. | 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

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