π − x | π − x | |||
1 + tg2( | ) = [ 1 + tg( | )]2 | ||
2 | 2 |
π−x | π−x | π−x | ||||
1+tg2( | )=1+tg2( | )+2tg( | ||||
2 | 2 | 2 |
π−x | ||
−2tg( | )=0 | |
2 |
π−x | ||
tg( | )=0 | |
2 |
π | x | ||
− | =0+kπ k∊Z | ||
2 | 2 |
x | π | |||
− | =− | +kπ | ||
2 | 2 |
x | π | ||
= | −kπ | ||
2 | 2 |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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