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Pilihan Topik Matematika - at ee-cafe.org

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

dx<br />

dv<br />

v<br />

dx<br />

dv<br />

x<br />

x<br />

x<br />

v<br />

v<br />

dx<br />

d<br />

dx<br />

v<br />

d 2<br />

2<br />

2<br />

2<br />

sec<br />

cos<br />

sin<br />

cos<br />

cos<br />

sin<br />

)<br />

(tan<br />

=<br />

+<br />

=<br />

⎟<br />

⎠<br />

⎞<br />

⎜<br />

⎝<br />

⎛<br />

=<br />

dx<br />

dv<br />

v<br />

v<br />

v<br />

dx<br />

d<br />

dx<br />

v<br />

d 2<br />

csc<br />

sin<br />

cos<br />

)<br />

(cot<br />

= −<br />

⎟<br />

⎠<br />

⎞<br />

⎜<br />

⎝<br />

⎛<br />

=<br />

dx<br />

dv<br />

v<br />

v<br />

dx<br />

dv<br />

v<br />

v<br />

v<br />

dx<br />

d<br />

dx<br />

v<br />

d<br />

tan<br />

sec<br />

cos<br />

sin<br />

0<br />

cos<br />

1<br />

)<br />

(sec<br />

2<br />

=<br />

+<br />

=<br />

⎟<br />

⎠<br />

⎞<br />

⎜<br />

⎝<br />

⎛<br />

=<br />

dx<br />

dv<br />

v<br />

v<br />

v<br />

dx<br />

d<br />

dx<br />

v<br />

d<br />

cot<br />

csc<br />

sin<br />

1<br />

)<br />

(csc<br />

= −<br />

⎟<br />

⎠<br />

⎞<br />

⎜<br />

⎝<br />

⎛<br />

=<br />

Jika w = f(x), maka<br />

dx<br />

dw<br />

w<br />

dx<br />

w<br />

d<br />

2<br />

1<br />

1<br />

1<br />

)<br />

(sin<br />

−<br />

=<br />

−<br />

dx<br />

dw<br />

w<br />

dx<br />

w<br />

d<br />

2<br />

1<br />

1<br />

1<br />

)<br />

(cos<br />

−<br />

= −<br />

−<br />

dx<br />

dw<br />

w<br />

dx<br />

w<br />

d<br />

2<br />

1<br />

1<br />

1<br />

)<br />

(tan<br />

+<br />

=<br />

−<br />

dx<br />

dw<br />

w<br />

dx<br />

w<br />

d<br />

2<br />

1<br />

1<br />

1<br />

)<br />

(cot<br />

+<br />

= −<br />

−<br />

dx<br />

dw<br />

w<br />

w<br />

dx<br />

w<br />

d<br />

1<br />

1<br />

)<br />

(sec<br />

2<br />

1<br />

−<br />

=<br />

−<br />

dx<br />

dw<br />

w<br />

w<br />

dx<br />

w<br />

d<br />

1<br />

1<br />

)<br />

(csc<br />

2<br />

1<br />

−<br />

= −<br />

−<br />

Soal-Soal : Carilah turunan fungsi-fungsi berikut.<br />

x<br />

y<br />

x<br />

y<br />

x<br />

y<br />

x<br />

y<br />

4<br />

sec<br />

;<br />

3<br />

tan<br />

3<br />

1<br />

)<br />

(2<br />

cos<br />

) ;<br />

(0,5<br />

sin<br />

1<br />

1<br />

1<br />

1<br />

−<br />

−<br />

−<br />

−<br />

=<br />

=<br />

=<br />

=

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