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For the following equation, evaluate 
f^(')(1).

f(x)=-4x^(5)+4x
Answer:

For the following equation, evaluate f(1) f^{\prime}(1) .\newlinef(x)=4x5+4x f(x)=-4 x^{5}+4 x \newlineAnswer:

Full solution

Q. For the following equation, evaluate f(1) f^{\prime}(1) .\newlinef(x)=4x5+4x f(x)=-4 x^{5}+4 x \newlineAnswer:
  1. Given Function: Given the function f(x)=4x5+4xf(x) = -4x^5 + 4x, we need to find the derivative of the function, which is denoted by f(x)f'(x). The derivative of a function gives us the rate at which the function's value changes at any given point.
  2. Power Rule Application: To find f(x)f'(x), we will use the power rule for differentiation, which states that the derivative of xnx^n with respect to xx is nx(n1)n*x^{(n-1)}. We will apply this rule to each term in the function separately.
  3. Derivative of 4x5-4x^5: Differentiating the first term 4x5-4x^5 with respect to xx, we get 4×5×x(51)=20x4-4 \times 5 \times x^{(5-1)} = -20x^4.
  4. Derivative of 4x4x: Differentiating the second term 4x4x with respect to xx, we get 4×1×x(11)=44 \times 1 \times x^{(1-1)} = 4.
  5. Combining Derivatives: Combining the derivatives of both terms, we get f(x)=20x4+4f'(x) = -20x^4 + 4.
  6. Evaluate at x=1x=1: Now we need to evaluate f(x)f'(x) at x=1x = 1. So we substitute xx with 11 in the derivative we found: f(1)=20(1)4+4f'(1) = -20(1)^4 + 4.
  7. Simplify and Final Result: Simplifying the expression, we get f(1)=20(1)+4=20+4=16f'(1) = -20(1) + 4 = -20 + 4 = -16.

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