Решить неравенство: (2/7)^(3×(x-1/3))<(4/49)^(x^2)

$( \frac{2}{7} )^{3(x- \frac{1}{3}) }\ \textless \ ( \frac{4}{49} )^{x^2}$
$( \frac{2}{7} )^{3(x- \frac{1}{3}) }\ \textless \ ( \frac{2}{7} )^{2x^2}$
${3(x- \frac{1}{3}) }\ \textgreater \ {2x^2}$
$3x-1 \ \textgreater \ \ {2x^2}$
$3x-1 - 2x^2\ \textgreater \ 0$
$2x^2-3x+1\ \textless \ 0$
$D=(-3)^2-4*2*1=1$
$x_1= \frac{3+1}{4}=1$
$x_2= \frac{3-1}{4}=0.5$

---------+-------(0.5)-------- - -------(1)--------+----------
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Ответ: (0.5;1)