Question

Решите неравенство log5(4x+1)>-1

Answer 1

{4x+1>0⇒4x>-1⇒x>-0,25
{4x+1>0,2⇒4x>0,2-1⇒4x>-0,8⇒x>-0,2
x∈(-0,2;∞)
            ////////////////////////////////////////////
---------(-0,25)----------------(-0,2)---------------
                                           \\\\\\\\\\\\\\\\\\\\\\\\\