Apply the quotient rule, which is:
dxdg(x)f(x)=g2(x)−f(x)dxdg(x)+g(x)dxdf(x)
f(x)=3x and g(x)=2x−1.
To find dxdf(x):
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The derivative of a constant times a function is the constant times the derivative of the function.
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Apply the power rule: x goes to 1
So, the result is: 3
To find dxdg(x):
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Differentiate 2x−1 term by term:
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The derivative of the constant −1 is zero.
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The derivative of a constant times a function is the constant times the derivative of the function.
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Apply the power rule: x goes to 1
So, the result is: 2
The result is: 2
Now plug in to the quotient rule:
−(2x−1)23