Graphing techniques
Check the graph and its symmetries · Diagrams
Read a logarithm beyond the sampled screen
Calculator notes
y = ln x: a finite sampled screen is not the whole curve
6:ZStandard: coarse positive-input samples in a −10..10 window
Analytical shape: x > 0, y → −∞ as x → 0⁺; zero at x = 1.
Use zoom options to reveal features, then justify them analytically.
Source ZOOM menu (visible rows):
- 2:Zoom In 3:Zoom Out 4:ZDecimal
- 5:ZSquare 6:ZStandard 7:ZTrig
- 8:ZInteger 9:ZoomStat 0:ZoomFit
Cartesian diagrams show behaviour and relationships between variables.
Use conventions such as dotted asymptotes to identify the important features.
Sampling illustration, not an emulation of a specific calculator display.