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Soal-soal<br />

4.4 Limit fungsi trigonometri<br />

Bukti :<br />

Perhatikan Gambar 3.4 berikut!<br />

y<br />

Q<br />

T<br />

r<br />

0<br />

P<br />

x<br />

Gambar 4.4<br />

Luas OPQ < Sektor OPQ < OPT (*)<br />

<br />

<br />

Substitusi persamaan (**) s/d (****) ke persamaan (*) didapat,<br />

84

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