Grade 11Algebra
Sum to n terms of the series1.3.5.7 + 3.5.7.9+............
Sum to n terms of the series
1.3.5.7 + 3.5.7.9+............
8 Answers
noogler
first find the nth term of the series
1,3,5,7,........are in first place …........nth term=1+(n-1)2=2n-1 nth term=a+(n-1)d
3,5,7,9.........are in second place.........nth term=3+(n-1)2=2n+1
similarly 3rd and 4th places nth terms are 2n+3,2n+5 respectively
now the entire nth term is........(2n-1)(2n+1)(2n+3)(2n+5)
exp it and apply summation..................................................................................
raju
∑(2n-1)(2n+1)(2n+3)(2n+5)
charan
∑(2n-1)(2n+1)(2n+3)(2n+5)
OUTPASS
∑(2n-1)(2n+1)(2n+3)(2n+5)
HARINATH
∑(2n-1)(2n+1)(2n+3)(2n+5)
salvathshaik
∑(2n-1)(2n+1)(2n+3)(2n+5
saibhargav
∑(2n-1)(2n+1)(2n+3)(2n+5)
Raunak JhunJhunWala
Well it can be done in more easier process by Vn method. nth term=2n-1*2n+1*2n+3*2n+5. Then apply summation properties to get answer....
Other Related Questions on algebra
How do you write “the product of 18 and q” as an algebraic expression?
How do you write “the product of 18 and q” as an algebraic expression?
algebra
Last Activity: 2 Years ago