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Given 
y=-2sin(2x), find 
(dy)/(dx).
Answer: 
(dy)/(dx)=

Given y=2sin(2x) y=-2 \sin (2 x) , find dydx \frac{d y}{d x} .\newlineAnswer: dydx= \frac{d y}{d x}=

Full solution

Q. Given y=2sin(2x) y=-2 \sin (2 x) , find dydx \frac{d y}{d x} .\newlineAnswer: dydx= \frac{d y}{d x}=
  1. Identify Function: Identify the function to differentiate.\newlineWe are given the function y=2sin(2x)y = -2\sin(2x) and we need to find its derivative with respect to xx.
  2. Apply Chain Rule: Apply the chain rule for differentiation.\newlineThe 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. In this case, the outer function is 2sin(u)-2\sin(u) where u=2xu = 2x, and the inner function is 2x2x.
  3. Differentiate Outer Function: Differentiate the outer function with respect to the inner function uu. The derivative of 2sin(u)-2\sin(u) with respect to uu is 2cos(u)-2\cos(u), because the derivative of sin(u)\sin(u) with respect to uu is cos(u)\cos(u) and we have a constant multiplier of 2-2.
  4. Differentiate Inner Function: Differentiate the inner function with respect to xx. The derivative of 2x2x with respect to xx is 22, because the derivative of xx with respect to xx is 11 and we have a constant multiplier of 22.
  5. Apply Chain Rule: Apply the chain rule by multiplying the derivatives from Step 33 and Step 44.\newline(dydx)=(2cos(u))×(2)(\frac{dy}{dx}) = (-2\cos(u)) \times (2) where u=2xu = 2x.
  6. Substitute Back: Substitute uu back into the equation to express the derivative in terms of xx.dydx=(2cos(2x))×(2)=4cos(2x)\frac{dy}{dx} = (-2\cos(2x)) \times (2) = -4\cos(2x).

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