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 Answe

**r**s · Science & Mathematics · 23/11/2015A = ∫ ∫

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

**r**s · Science & Mathematics · 03/12/20111. 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 Answe

**r**s · Science & Mathematics · 13/04/2009**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 Exponent1 Answe

**r**s · Science & Mathematics · 19/02/2013Since the rationals are dense in

**R**, for every reals a < b there is a rational**r**such that...2 Answe

**r**s · Science & Mathematics · 05/01/2014**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 Answe

**r**s · Science & Mathematics · 11/10/2011...4∫ √[

**r**² - (**r**·sin(θ))² ]**r**·cos(θ) dθ 4∫**r**·√[ 1 - sin²(θ) ]**r**·cos(θ) dθ F**r**om you Pythago**r**ean...2 Answe

**r**s · Science & Mathematics · 24/06/2010**r**^2-16tw+4wr-4tr= =**r**^2-4tr+4wr-16tw= =**r**(**r**-4t)+4w(**r**-4t)= =(**r**-4t)(**r**+4w)1 Answe

**r**s · Science & Mathematics · 19/04/2010t8 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 Answe

**r**s · Science & Mathematics · 18/11/2013Let'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 Answe

**r**s · Science & Mathematics · 17/09/2013