14. Ulteriori equazioni.

 

Risolvere in R le seguenti equazioni.

 

1)  x⁵ + x⁴ - 15x³ - 25x² + 14x + 24 = 0,                                    [ R: x = ±1,x = -2, x = -3, x = 4 ];

 

2)  ,                                                                                              [ R: x = 1+ e ];

 

3)  ,                                                                                                          [ R: x = 1/2 ];

 

4)  ,                                                                                               [ R: x = ± 1 ];

 

5)  ,                                                                       [ R: x = 1- e ];

 

6)  ,                                                                                              [ R: x = 0, x = 2 ];

 

7)  [1]                                                  ;

 

8)  ,                                                                                         [ R: x = 1];

9)  ,                                                                                                       [ R: x = 100 ];            

 

10) ,                                                                                     [ R: x = 2, x = 6 ];

 

11) ,                                                                                                 [ R: x = kp, kÎZ ];

 

12) ,                                                                                                             [ R: x = e^e ];

 

13) ,                                                                                         [ R: x = sen1 » 0,8415 ];

 

14) ,               [ R: x = 30°+ k360°, x = 90°+ k360°, x = 150°+ k360°,   x = 270°+ k360°, kÎZ ];