To Show {sn} Is Decreasing | To Show {sn} Is Increasing | |
---|---|---|
Algebraic Difference | Show sn+1−sn<0 for all n≥1. | Show sn+1−sn>0 for all n≥1. |
Algebraic Ratio | If sn>0 for all n≥1, show sn+1sn<1 for all n≥1. | If sn>0 for all n≥1, show sn+1sn>1 for all n≥1. |
Derivative | Show the derivative of a related function f of {sn} is negative for all x≥1. | Show the derivative of a related function f of {sn} is positive for all x≥1. |