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(2/13)^x2-1>1 inequation

You have entered [src]

    x2        
2/13   - 1 > 1

$$\left(\frac{2}{13}\right)^{x_{2}} - 1 > 1$$

(2/13)^x2 - 1 > 1

Rapid solution [src]

       log(2) 
x2 < ---------
     log(2/13)

$$x_{2} < \frac{\log{\left(2 \right)}}{\log{\left(\frac{2}{13} \right)}}$$

x2 < log(2)/log(2/13)

Rapid solution 2 [src]

        log(2)  
(-oo, ---------)
      log(2/13)

$$x\ in\ \left(-\infty, \frac{\log{\left(2 \right)}}{\log{\left(\frac{2}{13} \right)}}\right)$$

x in Interval.open(-oo, log(2)/log(2/13))