#3 ( Q. Malem )
Mudah aja.
f(x) = 8x² + 5x³ - 10
f"(-3) = ...?
__________
1 + 1 = ...
Mudah aja.
f(x) = 8x² + 5x³ - 10
f"(-3) = ...?
__________
1 + 1 = ...
Nomor satu
f(x) = 8x² + 5x³ - 10
Cari Turunan Pertama
8x² + 5x³ - 10
( 2 × 8 )x^(2-1) + ( 3 × 5 )x^(3-1) - ( 10 × 0 )
16x¹ + 15x² - 0
Cari Turunan kedua
16x + 15x²
( 1 × 16 )x^(1-1) + ( 2 × 15 )x^(2-1)
16x^0 + 30x^1
16(1) + 30x
16 + 30x
lalu, hasil dari f"(-3) :
16 + 30x
16 + 30(-3)
16 + ( -90 )
( -74 )
__________________________
Nomor dua
1 + 1
( 1 + 1 )
( 2 )
2
[tex]\boxed{\colorbox{purple}{ \colorbox{pink}{ \bf{NanazCanss< 3}}}}[/tex]
1. f(x) = 8x² + 5x³ - 10
f'(x) = 8(2)x²⁻¹ + 5(3)x³⁻¹
= 16x + 15x²
f''(x) = 16x¹⁻¹ + 15(2)x²⁻¹
= 16 + 30x
f''(-3) = 16 + 30(-3)
= -74
2. 1 + 1
= 2
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