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Find the derivative of the following function.

y=3^(-9x^(4)+3x^(3))
Answer: 
y^(')=

Find the derivative of the following function.\newliney=39x4+3x3 y=3^{-9 x^{4}+3 x^{3}} \newlineAnswer: y= y^{\prime}=

Full solution

Q. Find the derivative of the following function.\newliney=39x4+3x3 y=3^{-9 x^{4}+3 x^{3}} \newlineAnswer: y= y^{\prime}=
  1. Identify Function Components: Identify the function and its components.\newlineWe have y=3(9x4+3x3)y = 3^{(-9x^{4} + 3x^{3})}. This is an exponential function with base 33 and exponent 9x4+3x3-9x^4 + 3x^3.
  2. Apply Chain Rule: Apply the chain rule for derivatives.\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 aua^u where aa is a constant and uu is a function of xx, and the inner function is u(x)=9x4+3x3u(x) = -9x^4 + 3x^3.
  3. Differentiate Outer Function: Differentiate the outer function with respect to the inner function.\newlineThe derivative of aua^u with respect to uu is auln(a)a^u \cdot \ln(a), where ln(a)\ln(a) is the natural logarithm of aa. So, the derivative of 3u3^u with respect to uu is 3uln(3)3^u \cdot \ln(3).
  4. Differentiate Inner Function: Differentiate the inner function with respect to xx. The inner function is u(x)=9x4+3x3u(x) = -9x^4 + 3x^3. Using the power rule, the derivative of 9x4-9x^4 is 36x3-36x^3, and the derivative of 3x33x^3 is 9x29x^2. So, the derivative of u(x)u(x) with respect to xx is u(x)=36x3+9x2u'(x) = -36x^3 + 9x^2.
  5. Apply Chain Rule Multiplication: Apply the chain rule by multiplying the derivatives from Step 33 and Step 44.\newlineUsing the chain rule, the derivative of yy with respect to xx is y=(3uln(3))u(x)y' = (3^u \cdot \ln(3)) \cdot u'(x), where u=9x4+3x3u = -9x^4 + 3x^3 and u(x)=36x3+9x2u'(x) = -36x^3 + 9x^2. Substituting uu and u(x)u'(x) into the equation, we get y=(3(9x4+3x3)ln(3))(36x3+9x2)y' = (3^{(-9x^4 + 3x^3)} \cdot \ln(3)) \cdot (-36x^3 + 9x^2).
  6. Simplify Derivative Expression: Simplify the expression for the derivative. y=3(9x4+3x3)ln(3)(36x3+9x2)y' = 3^{(-9x^4 + 3x^3)} \cdot \ln(3) \cdot (-36x^3 + 9x^2) can be simplified by factoring out common terms if possible. However, in this case, the expression is already in its simplest form.

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