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Given the function 
y=2(-7x^(2)-2x)^(6), find 
(dy)/(dx) in any form.
Answer: 
(dy)/(dx)=

Given the function y=2(7x22x)6 y=2\left(-7 x^{2}-2 x\right)^{6} , 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(7x22x)6 y=2\left(-7 x^{2}-2 x\right)^{6} , find dydx \frac{d y}{d x} in any form.\newlineAnswer: dydx= \frac{d y}{d x}=
  1. Identify Function: We are given the function y=2(7x22x)6y=2(-7x^{2}-2x)^{6} and we need to find its derivative with respect to xx, which is denoted as dydx\frac{dy}{dx}. To do this, we will use the chain rule, which 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. The outer function in this case is u6u^{6} and the inner function is u=2(7x22x)u=2(-7x^{2}-2x). Let's start by finding the derivative of the outer function with respect to its inner function uu.
  2. Derivative of Outer Function: The derivative of u6u^6 with respect to uu is 6u56u^{5}. Now we will apply this to our function by substituting uu with 2(7x22x)2(-7x^{2}-2x), which gives us 6[2(7x22x)]56[2(-7x^{2}-2x)]^{5}.
  3. Derivative of Inner Function: Next, we need to find the derivative of the inner function u=2(7x22x)u=2(-7x^{2}-2x) with respect to xx. The derivative of 7x2-7x^{2} with respect to xx is 14x-14x, and the derivative of 2x-2x with respect to xx is 2-2. Therefore, the derivative of the inner function with respect to xx is 2(14x2)2(-14x - 2).
  4. Multiply Derivatives: Now we multiply the derivative of the outer function by the derivative of the inner function to get the overall derivative. This gives us (dy)/(dx)=6[2(7x22x)]5×2(14x2)(dy)/(dx) = 6[2(-7x^{2}-2x)]^{5} \times 2(-14x - 2).
  5. Simplify Expression: We can simplify this expression by multiplying the constants outside the brackets. This gives us (dydx=12×6(7x22x)5×(14x2))(\frac{dy}{dx} = 12 \times 6(-7x^{2}-2x)^{5} \times (-14x - 2)).
  6. Final Derivative: Finally, we multiply the constants 1212 and 66 to get 7272. So the derivative of the function yy with respect to xx is dydx=72(7x22x)5(14x2)\frac{dy}{dx} = 72(-7x^{2}-2x)^{5} \cdot (-14x - 2).

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