De-Moivre’s Theorem | Complex Number | Maths | 11th | Chapter 05 | Lec 9 | Vikram Sir

Roots OF Complex Numbers|| De Moivre's Theorem|| Cube Roots OF Unity

Roots OF complex numbers || De moivre's theorem || Cube roots OF unity

Find the product of complex numbers (2+9i),(11+3i) .

Let f(x)=x+ sqrt(x) "o n" [1,4]dot The mean value theorem says that there must be some number c between 1 and 4 so that f (c) is equal to the average slope of f(x) on [1,4]. the number c must be 5/2 (b) 9/4 (c) (11)/4 (d) 3

The average of eleven numbers is 54. The average of the first four numbers is 48 and that of the next four numbers is 25% more than the average of the first four. The ninth number is 8 greater than the 11th number and the tenth number is 4 greater than the 11th number. What is the average of the 9th and the 10th numbers? 11 संख्याओं का औसत 54 है | पहली चार संख्याओं का औसत 48 है तथा अगली चार संख्याओं का औसत पहली चार संख्याओं के औसत से 25% अधिक है | 9वीं संख्या 11वीं संख्या से 8 अधिक है तथा दसवीं संख्या 11वीं संख्या से 4 अधिक है | 9वीं और 10वीं संख्याओं का औसत ज्ञात करें |

The average of eleven numbers is 68. The average of the first four numbers is 78 and that of the next four is 63. The 9^(th) number is two times the 11^(th) number and the 10^(th) number is half of the 11^(th) number. What is the average of the 9^(th) and 11^(th) numbers ?

The average of 31 numbers is 59. The average of the first 11 numbers is 53.9 and that of the last 21 numbers is 62.1. lf the 11th number is excluded, then what is the average of the remaining numbers?

The average of twelve numbers is 45.5. The average of the first four numbers is 41.5 and that of the next five numbers is 48. The 10th number is 4 more than the 11th number and 9 more than the 12th number. What is the average of the 10th and 12th numbers? बारह संख्याओं का औसत 45.5 है | पहली चार संख्याओं का औसत 41.5 है तथा अगली पाँच संख्याओं का औसत 48 है | 10वीं संख्या, 11वीं संख्या से 4 अधिक तथा 12वीं संख्या से 9 अधिक है | 10वीं तथा 12वीं संख्याओं का औसत कितना है ?