

TURUNAN FUNGSI ALJABAR_1
Presentation
•
Mathematics
•
11th Grade
•
Medium
Mawaddah Amsul
Used 4+ times
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6 Slides • 3 Questions
1
TURUNAN FUNGSI ALJABAR_1

2
Turunan Fungsi Aljabar
Secara umum, jika mempunyai fungsi f(x) dan turunan f'(x), maka kedua fungsi tersebut mempunyai hubungan f′(x)=h→0lim hf(x+h)-f(x)
jika mempunyai fungsi f(x) fungsi aljabar diperoleh dasar turunan sebagai berikut:
1. f(x)=xn, maka f′(x)=nxn−1
2. f(x)=axn, maka f′(x)=anxn−1
3
Sifat-Sifat Turunan Fungsi Aljabar
Jika diketahui k suatu konstanta, u=u(x), v=v(x) dan masing-masing mempunyai turunan u'(x) dan v'(x),maka berlaku:
1. f(x)=u+v, maka f′(x)=u′+v′
3. f(x)=uv, maka f′(x)=u′v+uv′
4. f(x)=f(u), maka f′(x)=f′(u).u′
5. f(x)=vu, maka f′(x)=v2(u′v−uv′)
4
Contoh Soal
Turunan Pertama dari fungsi f(x)=3x4+2x2+5x+7
Penyelesaian:
f(x)=3x4+2x2+5x+7
f′(x)=4.3x4−1+2.2x2−1+5x1−1+0 f′(x)=12x3+4x1+5x0
f′(x)=12x3+4x1+5(1)
f′(x)=12x3+4x+5
5
Contoh Soal
Turunan Pertama dari fungsi f(x)=xx2+4
Penyelesaian:
f(x)=xx2+4
misalkan u=x2+4 ⟹ u′=2x
v=x=x 2 1⟹ v′=21x−2 1=2x1 =2xx
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Lanjutan
f(x)=vu ⟹ f′(x)=v2u′v−uv′
f′(x)=x2x(x)−(x2+4)(2xx)
f′(x)=x2xx−2x2x2x+2x24x
f′(x)=2x−2x+x24x
f′(x)=23x+x22x
7
Multiple Choice
Turunan pertama fungsi f(x)=5(2x2+4x) adalah f′(x)=...
20x+20x
10x+20x
20x+20
20+20
8
Multiple Choice
Diketahui fungsi f(x)=x2−5x+6 , berapa nilai f′(x)=...
2x−5
2x+6
2x−x
2x−5x
9
Multiple Choice
Turunan Pertama dari fungsi f(x)=5x2−7x
10x−5h
10x−7
10x−5
10x
TURUNAN FUNGSI ALJABAR_1

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