# Math homework help

## Questions related Graph Theory

I need to get answers for some questions related to Graph Theory.

## 1. Use de Moivre’s formula to verify that the fifth roots of unity form a group under complex multiplication, showing all work.

A. Let G be the set of the fifth roots of unity.

1. Use de Moivre’s formula to verify that the fifth roots of unity form a group under complex multiplication, showing all work.

2. Prove that G is isomorphic to Z5 under addition by doing the following:

a. State each step of the proof.

b. Justify each of your steps of the proof.

B. Let F be a field. Let S and T be subfields of F.

1. Use the definitions of a field and a subfield to prove that S ∩ T is a field, showing all work

## differential equation

i have question in differential equation is just one question i need it after 2 hrs please

is chapter 6 (the laplace transform) ,6.5(impulse function)

question number 4

## In right triangle trigonometry, explain why cos 60°= ½, regardless of the actual size of the triangle.

1. In right triangle trigonometry, explain why cos 60°= ½, regardless of the actual size of the triangle.

## Statistics assignment for second year university

This is a Statistics assignment for second year university. The file below is the assignment edited virsion to keep my privcy.

*note: I converted this file from pdf to word to hide my id info. I'll send origional file when agreed.