2012年度æ°å¦Iæ¼ç¿ç¬¬3å
2012年度æ°å¦Iæ¼ç¿ç¬¬3å
2012年度æ°å¦Iæ¼ç¿ç¬¬3å
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3 14<br />
<br />
<br />
tan(−θ) = − tan θ <br />
<br />
tan(θ + φ) =<br />
( π<br />
)<br />
tan<br />
4 − Arctan (cos 2x) =<br />
=<br />
tan θ + tan φ<br />
1 − (tan θ)(tan φ)<br />
tan π 4<br />
− tan (Arctan (cos 2x))<br />
1 + ( )<br />
tan π 4 (tan (Arctan (cos 2x)))<br />
1 − cos 2x<br />
1 + cos 2x = 2 sin2 x<br />
2 cos 2 x = tan2 x<br />
tan π <br />
Arctan(tan 2 x) = π − Arctan (cos 2x) + nπ<br />
4<br />
n n x = 0 <br />
0 = π − Arctan 1 + nπ<br />
4<br />
Arctan 1 = π 4<br />
n = 0 <br />
8 <br />
<br />
<br />
<br />
<br />
0 <br />
<br />
10 <br />
<br />
3.2 <br />
4 <br />
<br />
3.2.1 10 <br />
sin x cos x [− π 2 , π 2 ] x = ± π 2<br />
0 <br />
x = ± π 2<br />
sin x ±1 Arcsin x ±1 (−1, 1) <br />
<br />
d Arcsin x<br />
dx<br />
=<br />
1<br />
cos(Arcsin x)