Reference

13.1Reset the calculator#

Press 2ndreset0 to open RESET, then choose 2 (Yes). This clears the variables, history and lists, and sets every mode back to its start value (DEG, NORM, FLOAT, REAL, MATHPRINT). To only clear variables use 2ndclear varsto→. To only clear a list use data inside the data editor.

13.2Number range and precision#

• Calculations are done in decimal arithmetic, so 0.1 + 0.2 is exactly 0.3.
• Answers show up to 10 digits. Stored values keep more digits than are shown.
• The largest value is just under 1E100. Anything of 1E100 or more is an OVERFLOW error.
• Values smaller than 1E-99 (but not zero) become 0.
• Answers that need many digits switch to scientific notation automatically.
• The history keeps the 40 most recent entries.

13.3What is not included#

For graphs, matrices, solvers and programming, switch to one of the graphing models in the app.