
PENERAPAN TURUNAN
Presentation
•
Mathematics
•
University
•
Hard
Riani Widiastuti
Used 1+ times
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5 Slides • 4 Questions
1
PENERAPAN TURUNAN
By Riani Widiastuti, S.Pd, M.Pd
2
Jika garis singgung kurva bergradien < 0, maka kurva turun
Fungsi Turun
Jika garis singgung kurva bergradien > 0, maka kurva ………
Fungsi Naik
Jika garis singgung kurva bergradien = 0, maka keadaan garis …………, kurva pada titik singgungnya mencapai stasioner
Titik Stasioner
gradien : m = f'(x)
3
Contoh:
Tentukan pada interval mana fungsi berikut f(x) = x3 – 3x2 + 4 merupakan fungsi turun
Jawab:
fungsi turun : f ’(x) < 0
……….. < 0
3x (…. – …) < 0
Pembuat nol fungsi
3x (…. – …) = 0
3x = 0 atau (…. – …) = 0
x = …. x = ….
interval fungsi turun adalah : … < x < ….
4
Contoh:
Tentukan pada interval mana fungsi berikut f(x) = x3 – 3x2 + 4 merupakan fungsi naik
Jawab:
fungsi naik : f ’(x) > 0
……….. > 0
3x (…. – …) > 0
Pembuat nol fungsi
3x (…. – …) = 0
3x = 0 atau (…. – …) = 0
x = …. x = ….
interval fungsi turun adalah : x < … atau x > ….
5
Latihan soal:
Tentukan pada interval mana fungsi berikut merupakan fungsi naik atau fungsi turun
a. f(x) = x2 – 6x
b. f(x) = x3 + 4x2 – 20x + 2
c. f(x) = (x2 – 1) (x + 1)
d. f(x) = x3 + 9x2 + 15x + 4
6
Draw
interval fungsi naik dan turun dari fungsi
f(x) = x2 – 6x
7
Draw
interval fungsi naik dan turun dari fungsi
f(x) = x3 + 4x2 – 20x + 2
8
Draw
interval fungsi naik dan turun dari fungsi
f(x) = (x2 – 1) (x + 1)
9
Draw
interval fungsi naik dan turun dari fungsi
f(x) = x3 + 9x2 + 15x + 4
PENERAPAN TURUNAN
By Riani Widiastuti, S.Pd, M.Pd
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