CAS solve equation wrong

sigurdtorpnordby shared this problem 2 years ago
New

The solution of the inequality

lg(x^3)+lg(x^2)+lg(x)<=3

should be 0<x<=sqrt(10), but CAS gives a negative solution and split the interval.

lg(x^3)+lg(x^2)+lg(x)<3 does not give the negative solution, but still splits the interval.

lg(x^3)+lg(x^2)+lg(x)=3 seems to be correct.

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