Pi Day Fun Facts with PTC Mathcad

[jlee-10-11-12]

When i set the formula to "-In(t-0.75)+1.6", the green line will beyond the red line.

Why my Pi graph is  "-In(t-0.75)+1.1", not like the PTC Mathcad official graph shown in the following second picture?

http://www.ptc.com/mathcad-software-blog/pi-day

[MJG · Accepted solution]

Perhaps they cheated and used Photoshop.  PTC contributing to unrealistic image standards.

[Werner_E]

Probably they have changed the way how the abscissa values are chosen in a quickplot when they moved from P31 to P40.

Experiment with a range varable for t and different step values