# Exploring Definite Integral as Limit of Sum

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## Drag the slider for 'n', what do you observe?

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In the following applet : Use following commands in the input bar to get the Lower and Upper sum.(Tech Tip:Start typing Lower(or Upper) in the input bar on the left side, the respective command will show up. Select it and enter the respective values. LowerSum[ , , , ] LowerSum[ f, x(A), x(B),n ] UpperSum[ , , , ] UpperSum[ f, x(A), x(B),n ]