Sign table vs Variation table (1 Viewer)

[vuhung]

Why Variation table not introduced but only Sign table, in NESA syllabuses.

To sketch graphs of functions, Sign tables are not enough.

HSC Functions — Page 65

Functions for HSC Mathematics: transformations, inverses, composition, and key problem-solving techniques.

hsc-math-hub.vercel.app

 

[nonya2000]

because the hsc is attempting to appease low iq people like me who cannot do too complex math