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∑ _{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
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
|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
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
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
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
... 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
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
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
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