X belongs to N

  1. 👍 0
  2. 👎 0
  3. 👁 114
  1. 3 x = n x - (1+2+3 ...... n)

    1+2+3....+n is arithmetic sequence

    a = 1 and d = 1
    sum = (n/2)(2 + n-1)= (n/2)(1+n)
    = .5(n^2+n)
    3x = nx -.5(n^2+n)

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chem

    4HCl+O2=2Cl2+H2O Detremine the Kc expression for the reaction above by identifying what belongs in the numerator and what belongs int he denominator? pls do help trying to understand the concept but still confused.

    asked by byke on November 19, 2012
  2. math

    Identify all the sets to which the number 0.41567 belongs

    asked by KiwiKey on February 24, 2018
  3. Math

    We have to determine whether the set of all integers of the form m+(n(sqrt(3))) is a ring w.r.t to addition and multiplication. Is there any identity element e which belongs to this set, under addition such that x + e = x = e+x

    asked by Ashley on May 26, 2020
  4. Music

    Which instrument is not made of wood but belongs to the woodwind family?

    asked by Anonymous on December 5, 2012
  5. probability

    A red light bulb has been flashing forever, according to a Poisson process with rate r . Similarly, a blue bulb has been flashing forever, , according to an independent Poisson process with rate b . Let us fix t to be 12 o'clock.

    asked by x on September 3, 2019
  1. language arts

    a summary should include major events. which of these belongs in a summary of act 1 of the phantom tollbooth

    asked by josiah on March 2, 2016
  2. Math

    There are 30 students in a math class. 12 belongs to the computer club and 8 belongs to the photograph club. three belongs to both. how many belongs to neither???

    asked by Duce on April 14, 2011
  3. math

    Suppose that function f:[0,2]->R is continuous at [0,2], differentiable at (0,2) and such that f(0)=0, f(1)=1 and f(2)=1. a) Show that there is a x1 that belongs to (0,1) such that f'(x1)=1. b) Show that there is a x2 that belongs

    asked by Zisis on January 16, 2013
  4. Anatomy & Physiology

    The scientific binomial name of a species is Canis vulpis. Which of the following is true? A. the species belongs in the family Canis B. the species belongs in the genus vulpis C. the species belongs in the genus Canis D. the

    asked by Linda on May 15, 2013
  5. Solving an Equation in one variale

    If x belongs Z, Solve the equation sq.rt(1) + sq.rt(2) + sq.rt(3) + .......... + sq.rt(x^) + sq.rt(x^+1) + sq.rt(x^2+2) = 5190

    asked by Jerrie on April 21, 2013

More Similar Questions