Quotient Rule Explanation: To find the derivative of the function y with respect to x, we will use the quotient rule. The quotient rule states that if you have a function that is the quotient of two functions, v(x)u(x), then its derivative is given by (v(x))2v(x)⋅u′(x)−u(x)⋅v′(x). Here, u(x)=4x2+3x and v(x)=2x−7.
Derivative of u(x): First, we need to find the derivative of u(x) with respect to x. The derivative of u(x)=4x2+3x is u′(x)=8x+3, using the power rule which states that the derivative of xn is n⋅x(n−1).
Derivative of v(x): Next, we need to find the derivative of v(x) with respect to x. The derivative of v(x)=2x−7 is v′(x)=2, since the derivative of a constant is 0 and the derivative of 2x is 2.
Applying Quotient Rule: Now we apply the quotient rule. We have u′(x)=8x+3 and v′(x)=2, so we plug these into the quotient rule formula:(dy/dx)=(2x−7)2(2x−7)⋅(8x+3)−(4x2+3x)⋅2.
Simplifying Numerator: We simplify the expression in the numerator:(2x−7)×(8x+3)=16x2+6x−56x−21,(4x2+3x)×2=8x2+6x.So the numerator becomes:16x2+6x−56x−21−(8x2+6x)=16x2+6x−56x−21−8x2−6x.
Further Simplification: Simplify the terms in the numerator:16x2−8x2+6x−6x−56x−21=8x2−56x−21.
Further Simplification: Simplify the terms in the numerator:16x2−8x2+6x−6x−56x−21=8x2−56x−21.Now we have the simplified form of the derivative:(dy/dx)=(2x−7)28x2−56x−21.
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