assma

This page lists questions and answers that were posted by visitors named assma.

Questions

The following questions were asked by visitors named assma.

Let X1,X2,…,X25 be random sample ~ normal(0,16) and Y1, Y2,…,Y25 be random sample ~ normal(1,9), assume the two samples are independent ,comput P(X>Y) where X=Sum(Xi)/25 and Y=Sum(Yi)/25

Let x1,x2,x3,x4,x5 be random sample of f(x)=(x+1)/2,-1<x<1,zero elsewhere, find P(four of{x1,x2,x3,x4,x5}>0)

Let x1,x2,x3 be random sample of normal(6,4), find P(max{x1,x2,x3}>8)

Let x1,x2,x3 be random sample of normal(6,4)(x+1)/2,-1<x<1,find P(max{x1,x2,x3}>8)

Let x1,x2,x3 be random sample of f(x)=2x,0<x<1,zero elsewhere find P(x1/x2<0.5)

solve d^3y/dx^3-3d^2y/dx^2+2dy/dx=exp(2x)

how can find sum (x) from x=1 to x=n

prove sum(x)=n(n+1)/2 from x=1 to x=n

how can find on the particular solution of the linear DE's d^3y/dx^3+4d^2y/dx^2+4dy/dx=exp(-2x)

find integral exp(-x)x^-2

solve xd^2y/dx^2+y=0 by frobenius method

solve y"+4y-4z'=3x z"+z-y'=1-x where y(0)=z(0)=1 and y'(0)=z'(0)=0 by laplace transform

ln(y+1)+ln8=x+lnx

prove sum(x^2)=n(n+1)(2n+1)/2 from x=1 to x=n

prove sum(x^2)=n(n+1)(2n+1)/6 from x=1 to x=n

what is meanning frechet and gateaux derivatives

Answers

The following answers were posted by visitors named assma.

solve d^3y/dx^3+4d^2y/dx^2+4dy/dx=exp(-2x)

how can find on the particular solution of the linear DE's d^3y/dx^3+4d^2y/dx^2+4dy/dx=exp(-2x)

prove sum(x)=n(n+1)/2 from x=1 to x=n

thank you Steve

thank you Reiny

I know the steps, but I want to make sure the solution of the general solution With thanks and appreciation to answer

I need additional sources to tell the difference between them and how to calculate it