Penjelasan dengan langkah-langkah:
FungSi
Turunan Pertama
1.a
f(x) = 3x-2
f'(x) = 3(1x⁰) - 2(0)
f'(x) = 3
1.b
f(x) = -2x²-x
f'(x) = -2(2x¹)-(1x⁰)
f'(x) = -4x-1
1.c
f(x) = -x⁴+2x²-4
f'(x) = -(4x³)+2(2x¹)-4(0)
f'(x) = -4x³+4x
1.d
f(x) = (3x-2)²
f'(x) = u² . u'
........[ u' → 3x - 2 = 3(x⁰) - 2(0) = 3 ]
f'(x) = 2(u¹) . 3
f'(x) = (2(3x-2)¹). 3
f'(x) = (6x-4)3
f'(x) = 18x-12
1.e
f(x) = 2x/x+1
....... [ 2x = a ] dan [ x+1 = b]
rumus
f'(x) = 1/b² × ( a'.b - a.b')
...... [ a' → 2x = 2 ] dan [ b' → x+1 = 1 ]
f'(x) = 1/(x+1)² × ( 2.(x+1) - 2x.(1))
f'(x) = 1/(x+1) × (2x+2 - 2x)
f'(x) = [tex]\frac{2}{x+1}[/tex]
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Penjelasan dengan langkah-langkah:
FungSi
Turunan Pertama
1.a
f(x) = 3x-2
f'(x) = 3(1x⁰) - 2(0)
f'(x) = 3
1.b
f(x) = -2x²-x
f'(x) = -2(2x¹)-(1x⁰)
f'(x) = -4x-1
1.c
f(x) = -x⁴+2x²-4
f'(x) = -(4x³)+2(2x¹)-4(0)
f'(x) = -4x³+4x
1.d
f(x) = (3x-2)²
f'(x) = u² . u'
........[ u' → 3x - 2 = 3(x⁰) - 2(0) = 3 ]
f'(x) = 2(u¹) . 3
f'(x) = (2(3x-2)¹). 3
f'(x) = (6x-4)3
f'(x) = 18x-12
1.e
f(x) = 2x/x+1
....... [ 2x = a ] dan [ x+1 = b]
rumus
f'(x) = 1/b² × ( a'.b - a.b')
...... [ a' → 2x = 2 ] dan [ b' → x+1 = 1 ]
f'(x) = 1/(x+1)² × ( 2.(x+1) - 2x.(1))
f'(x) = 1/(x+1) × (2x+2 - 2x)
f'(x) = [tex]\frac{2}{x+1}[/tex]