[48] how to simplify derivative?

[Gilles]

(07-16-2023 08:53 AM)Thomas Klemm Wrote:  The equation writer is severely limited:

• I haven't figured out a way to expand \((a+b)^2\) to \((a+b)(a+b)\)
• it doesn't know about trigonometric identities
  

This makes it close to useless.

Hi, with the 49-50g, its easy, you select the portion of the equition that you want manipulate and then :
1/ expand \((a+b)^2\) to \((a+b)(a+b)\)
In the equation writer juste push soft menu FACTO
2/[*] it doesn't know about trigonometric identities
In the EQW choose Right Shift TRIG and then there are a lot of possibilité (TCOLLECT, TEXPAND etc.)