More symbolic solver issues

Im really getting tired of matlab being shown up by wolfram alpha. A program designed for high school kids

Very simple bit of code here

solve('((5*x + 13)*((25*x)/6 + 47/6) - 30)/((25*x)/6 + 47/6)>0')

and i get "can not find an explicit solution

type the same thing in wolfram alpha and i get an answer for x with out a single problem

why??? Now that I've waste 1.5 days on this foolishness

And yes i know all about the loss of matlab character string support for matlab and such. that is not the issue here.

Answer 1

[Sean de Wolski]

>>syms x
>>solve(((5*x + 13)*((25*x)/6 + 47/6) - 30)/((25*x)/6 + 47/6)>0,'IgnoreAnalyticConstraints',true)

ans =
  (3*109^(1/2))/25 - 31/25
- (3*109^(1/2))/50 - 103/50

>> double(ans)
ans =
  0.0128
 -2.6864

>> subs(((5*x + 13)*((25*x)/6 + 47/6) - 30)/((25*x)/6 + 47/6)>0,x,ans)
ans =
0 < 9101248911870249387665321454522297509/982817047206512525305913255026229248
         0 < 24126042787404995123109035636891/2839602102211972252884472430592

[Robert]

O right, excuse me, i forgot i have to tell matlab to do some obscure command to get it to solve a simple one variable equation. Great job math works! And they wonder why educators are choosing maple and mathematica over matlab these days

And using that command you get a totally different answer then wolfram alpha