I'm putting together a worksheet that assembles and manipulates a piecewise function.

The user enters X and Y coordinates in one matrix. And then uses a second matrix to describe how those points are connected.

I am getting incorrect values from a For Loop that calculates geometric properties for each line (or curve) segment (length, slope, y-intercept, etc.).

The slope (m = dy / dx) of the first two segments are being output as Zero, but the values (based on the input coordinates) should both be c. 3.7.

The third segment is a curve and those values (radius, chord length, etc.) are being calculated correctly.

The fourth segment is another line and the slope (c. 2.9) is being calculated correctly, this time.

I'm assuming that there is something wrong with my loop, but I am having trouble figuring it out. Any suggestions?

Thanks!

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piecewise-forum.sm (59 KiB) downloaded 42 time(s).

Hi. Near the end, in the loop, you use "slope:=0" for the case circle. Change it by "slope[i:=0".

Best regards.

Alvaro.

Wow. I completely missed that. Thanks for the reply!

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