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Pilihan Topik Matematika - at ee-cafe.org

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12.2. Turunan Fungsi Trigonometri Inversi<br />

1) y = sin −1 x<br />

1<br />

y<br />

2<br />

1 − x<br />

x<br />

x = sin y ⇒ dx = cos ydy ⇒<br />

dy<br />

dx<br />

=<br />

1<br />

1 − x<br />

2<br />

dy<br />

dx<br />

=<br />

1<br />

cos<br />

y<br />

2) y = cos −1 x<br />

1 2<br />

1 − x<br />

y<br />

x<br />

x = cos y ⇒ dx = −sin<br />

ydy ⇒<br />

dy<br />

dx<br />

= −1<br />

sin y<br />

;<br />

dy<br />

dx<br />

=<br />

−1<br />

1 − x<br />

2<br />

3) y = tan −1 x<br />

2<br />

1+<br />

x<br />

y<br />

1<br />

4) y = cot −1 x<br />

2<br />

1+<br />

x<br />

y<br />

x<br />

x<br />

1<br />

1<br />

x = tan y ⇒ dx = dy ⇒<br />

2<br />

cos y<br />

dy 2<br />

= cos y ;<br />

dx<br />

dy 1<br />

=<br />

dx 1+<br />

x<br />

−1<br />

x = cot y ⇒ dx = dy ⇒<br />

2<br />

sin y<br />

dy 2<br />

= −sin y ;<br />

dx<br />

dy<br />

dx<br />

2<br />

−1<br />

=<br />

1+<br />

x<br />

2<br />

150 Sudary<strong>at</strong>no Sudirham, “<strong>Pilihan</strong> <strong>Topik</strong> <strong>M<strong>at</strong>em<strong>at</strong>ika</strong>”

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