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  1. You have to go back to basics. R and S are subsets of A X...come up that much once it's defined. Now R - S makes sense. It's a set of...

    3 Answers · Science & Mathematics · 23/11/2015

  2. A = ∫ ∫ r dr dθ {( r ,θ) | 0 ≤ r ≤ 4 + 3 cos(θ) ; 0 ≤ θ ≤ 2π} = 1/2 ∫ (4 + 3 cos...θ) + 9 sin(θ) cos(θ)) ... from 0 to 2π = 41π / 2 =========== A = ∫ ∫ r dr dθ {( r ,θ) | 0 ≤ r ≤ 4 + 3 sin(θ) ; 0 ≤ θ ≤ 2π} = 1/2 ∫ (4 + 3 sin...

    2 Answers · Science & Mathematics · 03/12/2011

  3. 1. S(k, a, r ) is the sum of the first k terms of the geometric series: a, ar...n-1 corresponds to the general term of the geometric series with a = 100 and r = (11/17) Similarly, tn=50(14/17)^n-1 corresponds to the general...

    1 Answers · Science & Mathematics · 13/04/2009

  4. r '=1/2*(xsinx)^(-1/2)*(x*cosx+sinx)) r '=(x*cosx+sinx)/(2*(xsinx)^(1/2)) Missed 1. Product Rule for xsinx 2.Power Rule with subtracting the Exponent

    1 Answers · Science & Mathematics · 19/02/2013

  5. Since the rationals are dense in R , for every reals a < b there is a rational r such that...

    2 Answers · Science & Mathematics · 05/01/2014

  6. r = arcsin(4t) sin( r ) = 4t cos( r ) * dr = 4 * dt dr/dt = 4 / cos( r ) dr/dt = 4 / sqrt(1 - sin( r )^2) dr/dt = 4 / sqrt(1 - (4t)^2) dr/dt = 4 / sqrt(1 - 16 * t^2) r '(t) = 4 / sqrt(1 - 16 * t^2)

    4 Answers · Science & Mathematics · 11/10/2011

  7. ...4∫ √[ r² - (r·sin(θ))² ] r·cos(θ) dθ 4∫ r ·√[ 1 - sin²(θ) ] r·cos(θ) dθ From you Pythagorean...

    2 Answers · Science & Mathematics · 24/06/2010

  8. r ^2-16tw+4wr-4tr= = r ^2-4tr+4wr-16tw= = r ( r -4t)+4w( r -4t)= =( r -4t)( r +4w)

    1 Answers · Science & Mathematics · 19/04/2010

  9. t8 of the geometric sequence having a=3 and r =2 well, as i am not familiar with your conventions (yes, i... t3 of a geometric sequence is 112 and t8 is -3584, find t1 t3 = a r ^2 = 112 t8 = a r ^7 = - 3584 so r ^5 = - 32 = (-2)^5 so r = - 2 and a = 112 / 4 = 28...

    2 Answers · Science & Mathematics · 18/11/2013

  10. Let's look at an example: Let n = 6, r = 3, and the objects in the set = the digits... set of 3 would be counted 3 = C( r ,1) = r times. So we'd divide by 3 ... to...

    1 Answers · Science & Mathematics · 17/09/2013

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