Fractions and division

[michellembrodeur]

first  when I type in 3 x 2 it give me the answer 6.  but when I type in 3 /4 i give me 3 /4 not .75 unless I typ[e in =3/4 why?

also how do you add and subtract and so forth fractions.  like 3 4/5 + 1/2 - 1/4 + 5 6/7 = 

also it do not seem to do algebraic division. I ahve gotten it to work with addition / subtraction and multiplication but not division

  IE:   (3a + 4b) ( 4a - 3b)   over /   (2a -1b)  even with [] around the first set up equations it does not work. why?


thanks again for all the help. I am learning more  of this app daily.

[MrMage]

Hello,

The CAS treats everything as a symbolic expression. For example, sin(pi/4) is 1/sqrt(2), not 0.7...

Add fractions like this:

3+4/5+1/2-(4+2/7)

To do more sophisticated division, use the simplify() function (only available in PocketCAS pro).

Cheers

MrMage