# Curve integration

Curve integration, example: graph of speed VS time, integrate curve, or portions of curve to get distance covered during elapsed time.

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Two new Real-Time Expressions features enable this

time delta:

http://support.initialstate.com/knowledgebase/articles/1182217-real-time-expressions-math-timedelta

time derivative:

http://support.initialstate.com/knowledgebase/articles/1182223-real-time-expressions-math-timederivative