(i+under root 3)whole to the power100  +(i -under root 3)whole to the power 100 + 2 whole to the power 100=????
                   

4 years ago

Share

Answers : (1)

                                        

Dear Gurpreet,


 


w = (-1 + sqrt.3 i)/2   or w = (-1 - sqrt.3 i)/2


i2 = -1


so, w = i (i + sqrt.3 )/2 and w = i (i - sqrt.3 )/2


put value of w = (i + sqrt.3 ) and w = (i - sqrt.3 ) in given quest. and use w3 = 1 and i2 = -1 to solve the problem.


 


 


Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.


All the best.


Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.


Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..


 


Askiitians Expert


Anil Pannikar


IIT Bombay

4 years ago

Post Your Answer

More Questions On IIT JEE Entrance Exam

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
Sir, I got 48296 ( overall rank ) and 34385(category rank) in JEE mains... what are the colleges that I can get in ?
 
 
The link below is IIT JEE Main Branch and College Predictor.You can use it to get the answer to your query. http://www.askiitians.com/iit-jee/main/college-branch-predictor.html Thanks &...
  img
Aziz Alam 3 months ago
sir, pl. help me to solve following problems of permutation & combination- Q1. how many divisors of 9000 are even but not divisible by 4?also find the sum of such nos. Q2. the no. of ways an...
 
 
[Q-1]9000=3 2 5 3 2 3 we have to take exactly one 2. so number of ways (2+1)(3+1)(1)= 12 Sum of such numbers =(2)(3 0 + 3 1 +3 2 )(5 0 +5 1 +5 2 +5 3 ) [Q-2] first of all give 2 marks to...
  img
Nishant Vora one month ago
sir can you please tell me how to prepare for tensors 2014
 
 
Hi, Tensor is just another test paper that you solve while in your coaching, at home, or with askIITians. We infact have a full test series which has many full syllabus exams for mains and...
  img
Yash Baheti one month ago
 
sir how can i attend the test series of ask iitans
 
AJAY PILLAI K one month ago
i have secure 92% marks in icse.should i switch to cbse board for preparing for medical entrance.
 
 
yes as i’m studying in class11 and i have joined a coaching instiute which are having some syudents who belongs to ICSE background and i can see the difference as they are outshining me in...
 
maady manis 2 months ago
 
Yes, it is advisable to switch to CBSE board...because firstly, it is the CBSE which conducts the AIPMT...and secondly, AIPMT is based on NCERT. I too have joined CBSE board after completing...
 
Amrit Mohapatra 2 months ago
 
Yes, it is advisable to switch to CBSE board...because firstly, it is the CBSE which conducts the AIPMT...and secondly, AIPMT is based on NCERT. I too have joined CBSE board after completing...
 
Amrit Mohapatra 2 months ago
Actually...I got Integrated MSC in applied geology at iit kharagpur...And also I am getting CSE at BESU/IIEST shibpur..like I am confused as to where I should go..LIke Dep-C is possible at...
 
 
The situation is very dicy. All those students who have not secured “ECONOMICALLY PROFITABLE” branch they would have considered DEP-C as an option. So it would be safe and sound...
  img
Sourabh Singh 3 months ago
sir plz help me how i get concentration in study
 
 
you have to concentrate on studies by doing yoga in the early morning before sunrises.
 
lokesh palingi 8 months ago
 
I think you have to take 7-8 hrs sleep daily and start with easy chapters.
 
Ashfaq Khan 7 months ago
 
pray to god daily it will make you to stabilise
 
komalpreet 7 months ago
View all Questions »