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u<br />

tan u du = d = u tan u<br />

u du<br />

= u tan u ln u (terbukti)<br />

cot u du = u cot u ln u ( . )<br />

Bukti<br />

isal = cot u d =<br />

d = du = u<br />

du<br />

u<br />

unakan rumus integral parsial d = d<br />

cot u du = d = u cot u<br />

u<br />

u du<br />

= u cot u ln u (terbukti)<br />

sec u du = u sec u ln u u ( . )<br />

Bukti<br />

isal = sec u d =<br />

du<br />

u u<br />

d = du = u<br />

unakan rumus integral parsial d = d<br />

sec u du = d = u sec u<br />

u du<br />

u u<br />

= u sec u ln u u (terbukti)<br />

Bukti<br />

csc u du = u csc u ln u u ( . )<br />

isal = sec u d =<br />

d = du = u<br />

u u<br />

unakan rumus integral parsial d = d<br />

csc u du = d = u csc u<br />

u du<br />

u u<br />

= u csc u ln u u (terbukti)<br />

du<br />

155

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