α+β | α−β | |||
sinα+sinβ=2sin | cos | |||
2 | 2 |
α+β | α−β | |||
sinα−sinβ=2cos | sin | . | ||
2 | 2 |
α+β | α+β | α−β | α−β | |||||
(sinα+sinβ)(sinα−sinβ)=(2sin | cos | )(2sin | cos | ) | ||||
2 | 2 | 2 | 2 |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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