I easily converted the expression manually:
cos(3×X)+cos(X)=2×cos(2×X)×cos(X).
But I couldn`t do it either in afx-2.0+/graph100+ or in ti-v200. I may have forgotten some of the CAS features of these calculators. I would be grateful for a hint on how to do this in CASIO.
Little problem with CAS
Started by
Hlib2
, Oct 25 2021 02:59 PM
No replies to this topic
#1
Hlib2
-
- Members
-
- 144 posts
Casio Freak
- Gender:Male
- Location:Ukraine
-
Interests:industrial electronics,
graphing calculators -
Calculators:
fx-9860GII-2
graph-100+
fx-991DE_X
ti-89_Titanium
ti-voyage200
ti-84+SE
Posted 25 October 2021 - 02:59 PM
2 user(s) are reading this topic
0 members, 2 guests, 0 anonymous users
