Recent content by quackdesk

Proving lemma about regular polygons? Homework Statement Can a n-1 sided regular polygon be inscribed in n sided regular polygon for \forall n \in \mathbb {N} \gt 3 Homework Equations N/A The area of n-1 sided regular polygon may be the largest of any n-1 polygon which is to be...

how that the rank of the adjugate matrix (r(adj(A))) is : n if r(A)=n 1 if r(A)=n-1 0 if r(A)<n-1 How to deal with the proof? Can someone give more insight? What proof should I use here? I have an idea only for the third statement.

a=sqrt(e) b=6th root of e => a=b^3 =>(ab)=b^4=>(b^4)^(-1)=b^(-1/4)=e^(-1/24)

I agree with Dickfore :) I had an example like that on my last exam :)

I finally done it with a little help from a friend :) http://prikachi.com/images/946/4687946U.gif which is arcsin√x +C

Homework Statement http://prikachi.com/images/201/4687201t.gif Homework Equations Given in class on material connected with undefined integral The Attempt at a Solution Hard for me to grasp that one... P.S Thanks in advance

Homework Statement http://prikachi.com/images/26/4273026B.gif Homework Equations The Attempt at a Solution I'm having problems in solving the limit which is shown on the gif file . As you see I use L'Hopital's rule 2 times and I get to a point when I should divide -sinx with sinx...