integrate

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integrate $$\int dt$% WIDTH=31 HEIGHT=33$

Creates an integration (or stock) variable.

$\includegraphics[height=10mm]{images/integrate}% WIDTH=42 HEIGHT=45$

The operator can be placed on the canvas in two ways:

From the integrate widget $\resizebox{!}{2ex}{\includegraphics{images/integrate}}% WIDTH=12 HEIGHT=14$ on the toolbar; or
By typing the letters ``integrate'' on the canvas and then pressing the Enter key.

Integral blocks require two inputs: the flow being integrated, which is attached to the top input on the block, labeled $f$% WIDTH=13 HEIGHT=30

; and the initial conditions for the integral, which is attached to the bottom input, labeled $0$% WIDTH=12 HEIGHT=14