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Tanzania [10]
3 years ago
14

Use product rule to calculate the derivative of: 3

" title=" {x}^{2} " alt=" {x}^{2} " align="absmiddle" class="latex-formula">
.(2x-1)​
Mathematics
1 answer:
Fantom [35]3 years ago
7 0

Answer:

18x² - 6x

Step-by-step explanation:

Differentiate using the product rule, that is

y = f(x)g(x), then

\frac{dy}{dx} = f(x)g'(x) + g(x)f'(x)

here

f(x) = 3x² ⇒ f'(x) = 6x

g(x) = 2x - 1 ⇒ g'(x) = 2, thus

\frac{d}{dx}(3x²(2x - 1)

= 3x² × 2 + 6x(2x - 1)

= 6x² + 12x² - 6x

= 18x² - 6x

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Lynna [10]

Answer:

x=-2, y=-3

Step-by-step explanation:

we can rearrange the questions to make it easier

y=3x+3

2y=-3x-12

if you add the two equations, you get

3y=0x-9

so y=-9/3 = -3

plug y into one of the equations

-3=3x+3

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x=-2

and then check your work by plugging into the other equation:

2*-3=-3(-2)-12

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-6=-6

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