Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
If the sum of first m terms of AP is n and sum of n terms of AP is m, then show that the sum of (m + n) terms is "-(m+n)".
Dear sathya ,
m = n/2[2a + (n-1)d] where a and d are the first term and the commom diffrerence
n = m/2[2a + (m-1)d]
2a + (n-1)d = 2m/n-----1
2a + (n-1)d = 2n/m --------2
now solving the two equations for the 2 values of a and d
and then put the values of a and d in the equation
sum = (m+n)/2[2a + (m+n)d]
we will find that is equal to -(m+n)
We are all IITians and here to help you in your IIT JEE preparation.
Now you can win 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 : Click here to download the toolbar..
YOUR NAME
?In the 4th step,isnt it 2a + (m-1)d = 2n/m ? If u solve this equations,i dont think we might be gettin the ans.Please show the steps.
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !