" 32.If "Sigma n=210," then "Sigma n^(2)=?

For all n in N, Sigma n

For all n in N, Sigma n

If Sigma_(r=1)^(n) r^4=I(n), " then "Sigma__(r=1)^(n) (2r -1)^4 is equal to

If Sigma_(r=1)^(n) r^4=I(n), " then "Sigma__(r=1)^(n) (2r -1)^4 is equal to

From the following data find regression equation of y on x, Sigma x= 55, Sigma y= 88, Sigma x^(2)= 385, Sigma y^(2) = 1114, Sigma xy= 586,n= 10

Let a_n be the n^(th) term, of a G.P of postive terms. If Sigma_(n=1)^(100)a_(2n+1)= 200 and Sigma_(n=1)^(100)a_(2n)=100, " then" Sigma_(n=1)^(200)a_(n)

If b_i=1-a_i na = Sigma_(i=1)^(n) a_i, nb = Sigma_(i=1)^(n) b_i " then " Sigma_(i=1)^(n) a_b_i+Sigma_(i=1)^(n)(a_i-a)^2=

Given, n = 5, Sigma x_(i) = 25, Sigma y_(i) = 20, Sigma x_(i) y_(i) = 90 and Sigma x_(i)^(2) = 135 , find the regression coefficient of y on x.

If x Sigma_(n=0)^(oo) (-1)^n " tan "^(2n) " and " y = Sigma_(n=0)^(oo) " cos "^(2n) theta for 0 lt theta lt pi/4 , then :