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Given the function 
y=(-5x-9)^(4), find 
(dy)/(dx) in any form.
Answer: 
(dy)/(dx)=

Given the function y=(5x9)4 y=(-5 x-9)^{4} , find dydx \frac{d y}{d x} in any form.\newlineAnswer: dydx= \frac{d y}{d x}=

Full solution

Q. Given the function y=(5x9)4 y=(-5 x-9)^{4} , find dydx \frac{d y}{d x} in any form.\newlineAnswer: dydx= \frac{d y}{d x}=
  1. Identify Functions: To find the derivative of the function y=(5x9)4y=(-5x-9)^{4} with respect to xx, we will use the chain rule. The chain rule states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function times the derivative of the inner function.
  2. Derivative of Outer Function: First, let's identify the outer function and the inner function. The outer function is u4u^4 and the inner function is u=5x9u = -5x - 9. We will take the derivative of the outer function with respect to the inner function, which is 4u34u^3.
  3. Derivative of Inner Function: Now we will take the derivative of the inner function, u=5x9u = -5x - 9, with respect to xx. The derivative of 5x-5x is 5-5 and the derivative of a constant (9)(-9) is 00. So, the derivative of the inner function is 5-5.
  4. Apply Chain Rule: Next, we will apply the chain rule by multiplying the derivative of the outer function by the derivative of the inner function. This gives us (4u3)(5)(4u^3)(-5), where u=5x9u = -5x - 9.
  5. Substitute Back: Substitute uu back into the expression to get the derivative in terms of xx. This gives us (4(5x9)3)(5)(4(-5x - 9)^3)(-5).
  6. Simplify Expression: Finally, we simplify the expression to get the derivative of yy with respect to xx. This results in 20(5x9)3-20(-5x - 9)^3.

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