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`        Find a relation b/w x and y in order that rth mean between x and 2y is the same as the rth mean b/w 2x and Y, when n means are inserted in each case .`
one month ago

Arun
22299 Points
```							rth arithmetic mean b/w x and 2y : x + r*((2y-x)/(n+1))rth arithmetic mean b/w 2x and y: 2x + r*((y-2x)/(n+1))since both are equalx + r*((2y-x)/(n+1)) =2x + r*((y-2x)/(n+1))=> r * (((2y-x)-(y-2x))/(n+1)) = x=> r*(x+y)/(n+1) = x
```
one month ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions