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log_(x+3)(x^2-3*x+1)<=log_((2*x+5)/(3*x+7))(1) desigualdades

En la desigualdad la incógnita

Solución

Ha introducido [src]
   / 2          \                
log\x  - 3*x + 1/       log(1)   
----------------- <= ------------
    log(x + 3)          /2*x + 5\
                     log|-------|
                        \3*x + 7/
$$\frac{\log{\left(\left(x^{2} - 3 x\right) + 1 \right)}}{\log{\left(x + 3 \right)}} \leq \frac{\log{\left(1 \right)}}{\log{\left(\frac{2 x + 5}{3 x + 7} \right)}}$$
log(x^2 - 3*x + 1)/log(x + 3) <= log(1)/log((2*x + 5)/(3*x + 7))
Solución de la desigualdad en el gráfico
Respuesta rápida [src]
  /                           /                  ___\     /              ___    \                       \
  |                           |            3   \/ 5 |     |        3   \/ 5     |                       |
Or|And(-3 <= x, x < -7/3), And|0 <= x, x < - - -----|, And|x <= 3, - + ----- < x|, And(-7/3 < x, x < -2)|
  \                           \            2     2  /     \        2     2      /                       /
$$\left(-3 \leq x \wedge x < - \frac{7}{3}\right) \vee \left(0 \leq x \wedge x < \frac{3}{2} - \frac{\sqrt{5}}{2}\right) \vee \left(x \leq 3 \wedge \frac{\sqrt{5}}{2} + \frac{3}{2} < x\right) \vee \left(- \frac{7}{3} < x \wedge x < -2\right)$$
((-3 <= x)∧(x < -7/3))∨((-7/3 < x)∧(x < -2))∨((0 <= x)∧(x < 3/2 - sqrt(5)/2))∨((x <= 3)∧(3/2 + sqrt(5)/2 < x))
Respuesta rápida 2 [src]
                                    ___           ___    
                              3   \/ 5      3   \/ 5     
[-3, -7/3) U (-7/3, -2) U [0, - - -----) U (- + -----, 3]
                              2     2       2     2      
$$x\ in\ \left[-3, - \frac{7}{3}\right) \cup \left(- \frac{7}{3}, -2\right) \cup \left[0, \frac{3}{2} - \frac{\sqrt{5}}{2}\right) \cup \left(\frac{\sqrt{5}}{2} + \frac{3}{2}, 3\right]$$
x in Union(Interval.Ropen(-3, -7/3), Interval.open(-7/3, -2), Interval.Ropen(0, 3/2 - sqrt(5)/2), Interval.Lopen(sqrt(5)/2 + 3/2, 3))