Find the derivative of the function. Simplify and express the answer using positive exponents only. R(x) = [x²(x² + 7x)]ª

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Chapter6: Exponential And Logarithmic Functions
Section6.1: Exponential Functions
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Find the derivative of the function. Simplify and express the answer using positive exponents only.
R(x) = [x²(x² + 7x)]ª
Step 1
We want to find the derivative of the function R(x) = [x²(x² + 7x)]ª, simplifying and expressing the answer
using positive exponents only.
We begin by raising both factors inside the brackets to the fourth power. This gives
8
R(x) = x
(x2 + 7x)
Step 2
We now proceed to take the derivative. Since we rewrote our function as a product of two functions, the first
rule we use will be the Product
Rule. While using this rule, we will have to also use the Chain
Rule.
ra) = x* acx² + 7x)*( 4x + 21
D +
(x² + 7x)*(8x7)
= 4(x2 + 7x)3
4
+ (x2 + 7x)2x7
(x² + 7x)³[x(2x + 7) + 2(x2 + 7x)]
4x
( d/dx
(x² + 7x)³|
x2 + 7
= 4x
11
x+7
3
4х + 21
Transcribed Image Text:Find the derivative of the function. Simplify and express the answer using positive exponents only. R(x) = [x²(x² + 7x)]ª Step 1 We want to find the derivative of the function R(x) = [x²(x² + 7x)]ª, simplifying and expressing the answer using positive exponents only. We begin by raising both factors inside the brackets to the fourth power. This gives 8 R(x) = x (x2 + 7x) Step 2 We now proceed to take the derivative. Since we rewrote our function as a product of two functions, the first rule we use will be the Product Rule. While using this rule, we will have to also use the Chain Rule. ra) = x* acx² + 7x)*( 4x + 21 D + (x² + 7x)*(8x7) = 4(x2 + 7x)3 4 + (x2 + 7x)2x7 (x² + 7x)³[x(2x + 7) + 2(x2 + 7x)] 4x ( d/dx (x² + 7x)³| x2 + 7 = 4x 11 x+7 3 4х + 21
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