Matakuliah Tahun : Kalkulus-1 : 2009 TURUNAN FUNGSI EKSPONEN, LOGARITMA, TRIGONOMETRI & INVERS TRIGONOMETRI-2 Pertemuan-6: Turunan Fungsi Trigonometri Turunan Fungsi Invers Trigonometri Turunan Fungsi Trigonometri y sin(f ( x )) y ' cos(f ( x )).f '( x ) y cos(f ( x )) y ' sin(f ( x )).f '( x ) y tan(f ( x )) y ' sec (f ( x )).f '( x ) 2 y cot(f ( x )) y ' cosec 2 (f ( x )).f '( x ) y sec(f ( x )) y ' sec(f ( x )).tan(f ( x )).f '( x ) y cosec(f ( x )) y ' cosec(f ( x )).cot(f ( x )).f '( x ) Bina Nusantara University 3 Contoh-contoh: 1 y sin(2 x ) 2 y cos(3 2 x ) y sin ( 2 x ) y cos(2 x 1) y tan (5 3 x ) y cosec 4 x y cot 3x y sec 2 x 3 2 4 Bina Nusantara University 3 3 4 Turunan Fungsi Invers Trigonometri y arc sin f ( x ) y ' y arc cos f ( x ) y ' 1 1 (f ( x )) 2 1 1 (f ( x )) 2 .f '( x ) .f '( x ) 1 .f '( x ) 2 1 (f ( x )) 1 y arc cot f ( x ) y ' .f '( x ) 2 1 (f ( x )) 1 y arc sec f ( x ) y ' .f '( x ) 2 f ( x ) (f ( x )) 1 y arc tan f ( x ) y ' y arc cos f ( x ) y ' Bina Nusantara University 1 f ( x ) (f ( x )) 1 2 .f '( x ) 5 Contoh-contoh: • • • • • • y=arc sin 2x y=arc cos 3x y=arc tan 4x y=arc cot 5x y=arc sec 6x y=ar cosec 7x Bina Nusantara University 6 Turunan Fungsi Implisit • Bentuk fungsi implisit: f(x,y)=0 • Contoh: Cari dy/dx dari a. x2 + y2 = 25 di titik (4, 3) b. 3x2 + 7y2 =10 di titik (1,1) c. 4x3 + 6y3 – 1 = 0 d. x4 + y4 = 1 Bina Nusantara University 7
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