f(x) = 4x² + 5x³ - 2x - 3x³
f(x) = 2x³ + 4x² - 2x
f'(x) = 3(2x³-¹) + 2(4x²-¹) - 2
f'(x) =6x² + 8x - 2
f'(4) = 6(4)² + 8(4) - 2
f'(4) = 6(16) + 32 - 2
f'(4) = 96 + 30
f'(4) = 126
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___________________________________________ f'(x) = (2)4x² - ¹ + (3)5x³ - ¹ - (1)2 - (3)3x³ - ¹
f'(x) = 8x + 15x² - 2 - 9x²
___________________________________________ f'(4) = 8(4) + 15(4²) - 2 - 9(4²)
f'(4) = 8(4) + 15(16) - 2 - 9(16)
f'(4) = 32 + 240 - 2 - 144
f'(4) = 32 + 240 - 146
f'(4) = 32 + 94
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f(x) = 4x² + 5x³ - 2x - 3x³
f(x) = 2x³ + 4x² - 2x
f'(x) = 3(2x³-¹) + 2(4x²-¹) - 2
f'(x) =6x² + 8x - 2
f'(4) = 6(4)² + 8(4) - 2
f'(4) = 6(16) + 32 - 2
f'(4) = 96 + 30
f'(4) = 126
SOAL 1
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f(x) = 4x² + 5x³ - 2x - 3x³
___________________________________________ f'(x) = (2)4x² - ¹ + (3)5x³ - ¹ - (1)2 - (3)3x³ - ¹
f'(x) = 8x + 15x² - 2 - 9x²
___________________________________________ f'(4) = 8(4) + 15(4²) - 2 - 9(4²)
f'(4) = 8(4) + 15(16) - 2 - 9(16)
f'(4) = 32 + 240 - 2 - 144
f'(4) = 32 + 240 - 146
f'(4) = 32 + 94
f'(4) = 126
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