Apply Quotient Rule: To find the derivative of the function T(x)=x4+7ex2+8x, we will use the quotient rule and the chain rule. The quotient rule states that the derivative of a function that is the quotient of two other functions, v(x)u(x), is given by (v(x))2v(x)u′(x)−u(x)v′(x). The chain rule allows us to differentiate composite functions.
Identify u(x) and v(x): Let's identify u(x) and v(x) for the quotient rule. We have:u(x)=e(x2+8x)v(x)=x4+7Now we need to find the derivatives u′(x) and v′(x).
Find u′(x): First, we find u′(x) using the chain rule. The derivative of eg(x) with respect to x is eg(x)g′(x), where g(x)=x2+8x. So we need to find the derivative of g(x), which is g′(x)=2x+8.
Find v′(x): Now we calculate u′(x): u′(x)=e(x2+8x)⋅(2x+8)
Apply Chain Rule: Next, we find v′(x). Since v(x)=x4+7, we can rewrite this as (x4+7)21. Using the chain rule, the derivative of h(x)n is n⋅h(x)n−1⋅h′(x), where h(x)=x4+7 and n=21.
Calculate u′(x): We calculate the derivative of h(x), which is h′(x)=4x3. Then we apply the chain rule to find v′(x):v′(x)=21⋅(x4+7)−21⋅4x3
Substitute into Formula: Now we apply the quotient rule to find T′(x):T′(x)=(v(x))2v(x)u′(x)−u(x)v′(x)
Simplify Expression: Substitute u(x), u′(x), v(x), and v′(x) into the quotient rule formula:T′(x)=x4+7x4+7⋅ex2+8x⋅(2x+8)−ex2+8x⋅2x3/(x4+7)
Final Answer: Simplify the expression by combining terms and factoring out common factors where possible:T′(x)=x4+7e(x2+8x)⋅((2x+8)⋅x4+7−2x3)
Final Answer: Simplify the expression by combining terms and factoring out common factors where possible:T′(x)=x4+7ex2+8x⋅((2x+8)⋅x4+7−2x3)We have found the derivative of T(x) with respect to x. The final answer is:T′(x)=x4+7ex2+8x⋅((2x+8)⋅x4+7−2x3)
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