Apply Quotient Rule: To find the derivative of the function (x2−x+5)/(4x−1), we will use the quotient rule. The quotient rule states that if we have a function h(x)=f(x)/g(x), then its derivative h′(x) is given by h′(x)=(f′(x)g(x)−f(x)g′(x))/(g(x))2. Here, f(x)=x2−x+5 and g(x)=4x−1.
Find f′(x): First, we find the derivative of f(x)=x2−x+5. The derivative of x2 is 2x, the derivative of −x is −1, and the derivative of a constant like 5 is 0. So, f′(x)=2x−1.
Find g′(x): Next, we find the derivative of g(x)=4x−1. The derivative of 4x is 4, and the derivative of a constant like −1 is 0. So, g′(x)=4.
Expand Numerator: Now we apply the quotient rule. We have f′(x)=2x−1 and g′(x)=4, so we plug these into the quotient rule formula:h′(x)=(4x−1)2(2x−1)(4x−1)−(x2−x+5)(4).
Subtract Terms: We expand the numerator:(2x−1)(4x−1)=8x2−2x−4x+1=8x2−6x+1,(x2−x+5)(4)=4x2−4x+20.So, the numerator becomes (8x2−6x+1)−(4x2−4x+20).
Simplify Result: Subtract the terms in the numerator:(8x2−6x+1)−(4x2−4x+20)=8x2−6x+1−4x2+4x−20=4x2−2x−19.Now we have the simplified numerator and the denominator squared:h′(x)=(4x−1)24x2−2x−19.This is the derivative of the function 4x−1x2−x+5 in simplified form.
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