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Given the function 
y=-2(-5x^(2)-2x)^(3), find 
(dy)/(dx) in any form.
Answer: 
(dy)/(dx)=

Given the function y=2(5x22x)3 y=-2\left(-5 x^{2}-2 x\right)^{3} , find dydx \frac{d y}{d x} in any form.\newlineAnswer: dydx= \frac{d y}{d x}=

Full solution

Q. Given the function y=2(5x22x)3 y=-2\left(-5 x^{2}-2 x\right)^{3} , find dydx \frac{d y}{d x} in any form.\newlineAnswer: dydx= \frac{d y}{d x}=
  1. Apply Chain Rule: First, we need to apply the chain rule to differentiate the function y=2(5x22x)3y = -2(-5x^2 - 2x)^3 with respect to xx. 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. Identify Functions: Let's identify the outer function and the inner function. The outer function is u3u^3 (where uu is some function of xx), and the inner function is u=5x22xu = -5x^2 - 2x. We will first differentiate the outer function with respect to uu, which gives us 3u23u^2.
  3. Differentiate Outer Function: Now we differentiate the inner function u=5x22xu = -5x^2 - 2x with respect to xx. The derivative of 5x2-5x^2 with respect to xx is 10x-10x, and the derivative of 2x-2x with respect to xx is 2-2. So the derivative of the inner function is dudx=10x2\frac{du}{dx} = -10x - 2.
  4. Differentiate Inner Function: Next, we apply the chain rule by multiplying the derivative of the outer function with respect to uu (which is 3u23u^2) by the derivative of the inner function with respect to xx (which is 10x2-10x - 2). This gives us (dy/dx)=3u2(10x2)(dy/dx) = 3u^2 * (-10x - 2).
  5. Apply Chain Rule Multiplication: Substitute the inner function uu back into the expression for u2u^2 to get (3(5x22x)2)(10x2)(3(-5x^2 - 2x)^2) * (-10x - 2).
  6. Substitute Inner Function: Finally, we need to multiply the constant factor 2-2 from the original function y=2(5x22x)3y = -2(-5x^2 - 2x)^3 by the derivative we found. This gives us (dy/dx)=2×(3(5x22x)2)×(10x2)(dy/dx) = -2 \times (3(-5x^2 - 2x)^2) \times (-10x - 2).
  7. Multiply by Constant Factor: Simplify the expression to get the final derivative. (dydx)=2×3×(10x2)×(5x22x)2=6×(10x2)×(5x22x)2(\frac{dy}{dx}) = -2 \times 3 \times (-10x - 2) \times (-5x^2 - 2x)^2 = -6 \times (-10x - 2) \times (-5x^2 - 2x)^2.

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