| 2 | |
x<sinx | |
| π |
| 4 | ||
tgx< | x | |
| π |
| π | ||
x∊<0, | > | |
| 2 |
| 4 | π | |||
nierówność tg x < | x dla x= | przyjmuje postać: | ||
| π | 4 |
| π | ||
tg x = tg | = 1 | |
| 4 |
| 4 | π | 4 | |||
x = | * | = 1 | |||
| π | 4 | π |
| 4 | ||
stąd tg x = | x , | |
| π |
| 2 | π | |||
nierówność | x < sin x dla x= | przyjmuje postać: | ||
| π | 2 |
| 2 | 2 | π | |||
x = | * | = 1 | |||
| π | π | 2 |
| π | ||
sin x = sin | = 1 | |
| 2 |
| 2 | ||
stąd | x = sin x , | |
| π |