ChaoticLlama
Junior Member
- Joined
- Dec 11, 2004
- Messages
- 199
........................20
I know that for Σ i³ you would just use [{20(20 + 1)}/2]² to find the sum
........................ i=1
But is there any way to use the formula for a summation whose starting value is not 1?
For example:
20
Σ i³
i=4
I know that for Σ i³ you would just use [{20(20 + 1)}/2]² to find the sum
........................ i=1
But is there any way to use the formula for a summation whose starting value is not 1?
For example:
20
Σ i³
i=4