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3 years ago

F(x) =

Mathematics

1 answer:

Oksana_A [137]3 years ago

4 0

9514 1404 393

Answer:

f'(x) = (-6x² -14x -23)/(x² +5x +2)²

f''(x) = (12x³ +42x² +138x +202)/(x² +5x +2)³

Step-by-step explanation:

The applicable derivative formula is ...

d(u/v) = (v·du -u·dv)/v²

f'(x) = ((-x² -5x -2)(4x +4) -(2x² +4x -3)(-2x -5))/(-x² -5x -2)²

f'(x) = (-4x³ -24x²-28x -8 +4x³ +18x² +14x -15)/(x² +5x +2)²

f'(x) = (-6x² -14x -23)/(x² +5x +2)²

Similarly, the second derivative is the derivative of f'(x).

f''(x) = ((x² +5x +2)²(-12x -14) -(-6x² -14x -23)(2(x² +5x +2)(2x +5)))/(x² +5x +2)⁴

f''(x) = ((x² +5x +2)(-12x -14) +2(6x² +14x +23)(2x +5))/(x² +5x +2)³

f''(x) = (12x³ +42x² +138x +202)/(x² +5x +2)³

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Step-by-step explanation:

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3 years ago

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If a bacteria population starts with 100 bacteria and doubles every three hours, then the number of bacteria after t hours is n

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Answer:

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Step-by-step explanation:

$f(t) = 100 \cdot 2^\frac{t}{3}$

To find inverse of a function , replace f(t) with y

$y= 100 \cdot 2^\frac{t}{3}$

replace t with y and y with x

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multiply by 3 on both sides

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