A conversation of the TI-Nspire Google Group occurred today about graphing implicit functions. The expression entered for the graph to the left demonstrates another reason to "go CAS." With the TI-Nspire CAS you can easily graph implicit relations, especially conics. CAS has its advantages. (When using this 'zeros method', remember the ",y)" at the end.)I was impressed with using the zeros feature to graph this. On my TI-Nspire Calculus website I have a file where hearts are graphed from functions with radicals and inverse trig functions. There are also 2 kinds of polar hearts, a parametric, and an implicit heart graph plotted using a different method than the lovely 'zeros method' shown on the left. I made a pdf of the heart graphs for the enjoyment of all.
(Update: See what graphing a heart in 3D looks like on the 3.0 operating system of the TI-Nspire CX. This works on the numeric or CAS Nspire.)
Romans 13:8 "Let no debt remain outstanding,
except the continuing debt to love one another,
for he who loves his fellowman has fulfilled the law."
except the continuing debt to love one another,
for he who loves his fellowman has fulfilled the law."
